Blog · October 11, 2026 · 11 min read

English Spelling Mistakes Polish Speakers Make, and How to Fix Them

If you learned to read in Polish, you learned a spelling system that rewards a good ear. Once you know the rules for rz and ż, ó and u, ch and h, almost every Polish word can be read aloud correctly and most can be spelled from sound. Then English arrives with knight, colonel and Wednesday, and it can feel as if the rules have simply been switched off.

They have not. Most of the mistakes Polish speakers make in English come from a small number of specific habits. Some come from Polish sounds, some from the values Polish gives to Latin letters, and some from the Polish forms of words that English shares with Polish, which are close enough to feel safe and different enough to trip you. Each habit has a fix, and a few of your Polish habits turn out to be strengths.

This guide goes through them one at a time, gives you forty words to practice, and sets out a daily method that fits the way these errors happen.

What Polish already gives you

Start with the strengths, because they are real.

Polish learners know that one sound can have two spellings. The same sound is written ż in żaba and rz in rzeka, and u and ó sound alike in mur and mój. Polish children learn which is which partly by rule and partly by finding a related word: róg is written with ó because rogi has an o. That habit of checking a word against its family is exactly what English needs. The g in sign makes sense once you hear it in signal; the vowel in definite is clear in define. A 2010 review of 22 classroom studies by Peter Bowers, John Kirby and Hélène Deacon found that teaching students how words are built from meaningful parts helps their reading, spelling and vocabulary, and you arrive with years of practice in it.

Polish also has some of the most generous consonant clusters in Europe. Pstrąg, źdźbło and bezwzględny make English strengths and texts look modest. Learners from many other languages drop consonants from English clusters. Polish speakers almost never do.

W, Ł and V: the letters that changed jobs

Here is the most Polish of all the traps. In Polish, the letter w stands for the v sound: woda, wino, Warszawa. The English w sound is written ł: łódź, ładny. So a Polish reader has spent a lifetime seeing w and saying v.

That causes two kinds of error. In reading and speaking, wine can come out as vine and west as vest. In writing, the confusion runs the other way, and it is common in the writing of quite advanced learners: you hear a v and your hand, trained by Polish, reaches for w. "Wisit", "wery" and "inwite" all come from this. Polish loanwords make it worse, because wizja, wersja and wideo all write v as w.

The fix is to separate letters from sounds deliberately. In English, the letter w never makes a v sound, and the v sound is almost always written v. For the sounds themselves, use your mouth: for v the top teeth touch the lower lip, which you already know from Polish w; for w the lips round as in Polish ł. If you think "English w is Polish ł", the problem shrinks quickly.

Other letters with Polish habits

The w is the biggest letter trap, but not the only one. Polish gives several Latin letters jobs that English does not.

Polish j is the sound of English y, as in jajko, so yes and young can be tempted toward j. Polish c is always a ts sound, never a k, and Polish writes the k sound with k: komputer, kontakt, klasa, koncert. Polish writes the f sound with f even in Greek words, where English uses ph: fotografia, telefon, fizyka, filozofia. And Polish y is a vowel, so English words where y acts as a consonant can look strange.

In writing English, the results are predictable: "komputer", "kontact", "telefon", "fotograph", "filosophy", "fisics". These words feel easy, because you know them from Polish, and that is exactly why the Polish letters slip in. A useful rule: when an English word has a Polish twin with k, f or w, check whether English uses c, ph or v instead. It very often does.

Doubled letters you cannot trust

Polish has double consonants, and it pronounces them. Lekki (light) has a longer k than leki (medicines), and Anna has a longer n than Ana would. So a Polish speaker expects a doubled letter to be something you can hear.

English double letters are almost always silent. The two p's in happy sound like the single p in paper. That alone causes errors, but Polish cognates add a second problem: the Polish word often doubles different letters from the English one, or none at all.

EnglishPolishThe trap
addressadresadress
successsukcessucces, sucess
commissionkomisjacomission
aggressiveagresywnyagresive
professorprofesorproffesor
collectionkolekcjacolection
tennistenistenis
effectefektefect

The rule is easy to say: never borrow double letters from Polish. When an English word has a Polish twin, look up the English spelling and pay special attention to the consonants in the middle. For the patterns behind English doubling, our guide to doubling in the middle of words explains why accommodate and necessary look the way they do.

Endings that transfer, and one that hides a choice

Some Polish patterns map onto English almost perfectly. The ending -cja usually becomes -tion: informacja and information, stacja and station, organizacja and organization. The ending -sja usually becomes -sion: wersja and version, dyskusja and discussion, telewizja and television. Polish -izm is English -ism, and -ista is -ist.

The caution is the middle of the word, not the end. Komisja transfers to -sion perfectly and still loses a double m and a double s on the way. And notice organizacja: the z in the Polish word matches the American spelling organization, while British writers may use organisation. More on that below.

Final consonants that change their voice

Polish devoices consonants at the end of words. Chleb ends in a p sound; róg ends in a k sound; ząb ends in a p. Every Polish child learns to write the voiced letter anyway, by checking a related form.

Carried into English, this habit makes final pairs hard to separate by ear: bed and bet, dog and dock, bag and back, prize and price. Most of the time you know the word and spell it right. The errors appear when you write from speech, in notes or dictation, or when two words are both plausible. Your Polish check-word habit works here too. Bed has a d you can hear in bedding; dog has a g you can hear in doggy.

Vowels: ship and sheep, bed and bad

Polish has six oral vowels and does not use vowel length to separate words. English has around twenty vowel sounds, depending on accent, and many of them come in pairs that Polish ears tend to merge.

The most common are ship and sheep, live and leave, full and fool. English also has the vowel in bad, man and cat, which Polish lacks, and Polish speakers often hear it as the e of bed, men and bet. The vowel in cup and money is often heard as Polish a, so cup and cap can blur.

Then there is the vowel that hides. English reduces many unstressed vowels to a weak "uh" sound called the schwa, while Polish pronounces every vowel fully. A word learned by ear, like separate or environment, gives you no clue which letter belongs in the weak syllable. Our article on the schwa shows how to find the hidden letter through a related word, which is the Polish check-word habit again.

Capitals, TH and the rest

Polish writes days, months and language names with small letters: poniedziałek, styczeń, angielski. English capitalizes all three: Monday, January, English, and also nationality adjectives such as Polish. This is one of the most frequent errors in emails from Polish writers, and one of the easiest to fix once you know to look for it.

Polish has no th sounds, so think, three and thing may be said with f, t or s. In spelling this mostly causes listening errors, such as tree written for three in notes. Words with th that Polish borrowed from Greek are a quieter trap, because Polish writes them with plain t: teoria, metoda, teatr, autor, rytm, maraton. The English words keep the h: theory, method, theater, author, rhythm, marathon.

Forty words to practice

These forty words come from the traps above. All are common in work and study, and many combine two problems.

Problem areaWords
W and Vvery, visit, video, invite, version, west, window, wine
K, F and Ycomputer, contact, concert, telephone, photograph, physics, philosophy, yes
Doubled lettersaddress, success, commission, aggressive, professor, collection, tennis, effect
TH in cognatestheory, method, theater, author, rhythm, marathon, three, think
Vowels and capitalsbad, cup, ship, leave, separate, Monday, January, English

A daily method that fits the problem

Most of your errors are not about hearing; they are about familiar words with Polish spellings underneath. So the method has two parts.

First, for cognates, write the Polish word and the English word side by side and mark every letter that differs: adres and address, komputer and computer. This turns your Polish knowledge from a source of errors into a source of evidence. It takes a minute per word and you only need to do it once.

Second, practice from sound, not from sight. Hear each English word, type it from memory, and check it letter by letter. When a letter is wrong, name the habit behind it: Polish w, Polish double letters, a missing h. Then mix the words, so that very sits next to west and address next to professor, which forces a real choice each time.

Finally, bring the words back over days. Henry Roediger and Jeffrey Karpicke showed in 2006 that recalling something from memory strengthens it far more than reading it again, and Nicholas Cepeda and colleagues, reviewing more than 300 experiments, found that practice spread over days beats the same practice in one session. Spelling.School does this scheduling for you: a recorded voice says the word, you type it, the app shows exactly which letters went wrong, and the word comes back for review with spaced repetition.

British or American

Many Polish schools teach British English, and many Polish learners also absorb American English from films, games and work. Both spellings are correct, and IELTS, TOEFL and the Cambridge exams accept either, but mixing them in one document looks careless.

If you write for an American company, use American spelling throughout: color, center, organization. If you studied British English and prefer it, keep colour, centre and organisation, and remember that organization with a z is also accepted in British publishing. Either way, set your spell-checker to match. Our guide to British and American spelling has the full list of patterns.

What to do next

Take an email or report you wrote recently and check three things only: every w and v, every word that has a Polish twin, and the capitals on days, months and languages. Most Polish writers find that these three checks catch most of their errors in a single pass.

Then work on the matching rows of the table for a few minutes a day, from sound and from memory, with the misses brought back over days. Recordings and a notebook will do, and so will Spelling.School. If you also know Russian, the spelling mistakes Russian speakers make covers the same cognate traps from the Cyrillic side, and why English spelling is so hard for non-native speakers gives the wider picture.

Questions people ask

Why do Polish speakers write w instead of v in English?

In Polish, the letter w stands for the v sound, as in woda and wino, and the English w sound is written ł. So a Polish writer who hears an English v may reach for the letter w, producing errors such as wery or wisit. Polish loanwords such as wideo and wizja reinforce the habit. Remembering that English w never makes a v sound, and thinking of English w as Polish ł, fixes most of these mistakes.

Which English words do Polish speakers misspell most often?

The most common errors are in words with Polish twins: address and success, which have one d and one c in Polish; computer and contact, which Polish writes with k; telephone and photograph, which Polish writes with f; and theory and method, which have no h in Polish. Words with v, such as very and visit, and capitals on days, months and languages are also frequent trouble spots.

Why do Polish speakers get double letters wrong in English?

Polish pronounces its double consonants as long sounds, so Polish speakers expect a doubled letter to be audible, while English double letters are usually silent. On top of that, Polish cognates often double different letters from English, as with adres and address or profesor and professor. The safest rule is never to copy double letters from the Polish word, and to check the English spelling of every cognate separately.

Do Polish speakers capitalize days and months in English?

They should, but it is a common slip. Polish writes days of the week, months and language names with lowercase letters, as in poniedziałek, styczeń and angielski. English capitalizes all of them, as in Monday, January and English, and also nationality adjectives such as Polish. Checking capitals in a final read-through catches these errors quickly.

Does knowing Polish help with English spelling?

Yes. Polish schools teach students to find a related word that shows how a doubtful sound is spelled, and the same method explains many English spellings, such as the g in sign that is heard in signal. Polish also has heavy consonant clusters, so Polish speakers rarely drop consonants from English words such as texts or strengths. Endings also transfer well: -cja usually becomes -tion and -sja usually becomes -sion.

Should Polish learners use British or American spelling?

Either is correct, and IELTS, TOEFL and the Cambridge exams accept both. Many Polish schools teach British English, while films and work often bring in American forms, so learners easily mix the two. Choose one system, use it consistently in each document, and set your spell-checker to the same variety.

Questions people ask

Why do Polish speakers write w instead of v in English?

In Polish, the letter w stands for the v sound, as in woda and wino, and the English w sound is written ł. So a Polish writer who hears an English v may reach for the letter w, producing errors such as wery or wisit. Polish loanwords such as wideo and wizja reinforce the habit. Remembering that English w never makes a v sound, and thinking of English w as Polish ł, fixes most of these mistakes.

Which English words do Polish speakers misspell most often?

The most common errors are in words with Polish twins: address and success, which have one d and one c in Polish; computer and contact, which Polish writes with k; telephone and photograph, which Polish writes with f; and theory and method, which have no h in Polish. Words with v, such as very and visit, and capitals on days, months and languages are also frequent trouble spots.

Why do Polish speakers get double letters wrong in English?

Polish pronounces its double consonants as long sounds, so Polish speakers expect a doubled letter to be audible, while English double letters are usually silent. On top of that, Polish cognates often double different letters from English, as with adres and address or profesor and professor. The safest rule is never to copy double letters from the Polish word, and to check the English spelling of every cognate separately.

Do Polish speakers capitalize days and months in English?

They should, but it is a common slip. Polish writes days of the week, months and language names with lowercase letters, as in poniedziałek, styczeń and angielski. English capitalizes all of them, as in Monday, January and English, and also nationality adjectives such as Polish. Checking capitals in a final read-through catches these errors quickly.

Does knowing Polish help with English spelling?

Yes. Polish schools teach students to find a related word that shows how a doubtful sound is spelled, and the same method explains many English spellings, such as the g in sign that is heard in signal. Polish also has heavy consonant clusters, so Polish speakers rarely drop consonants from English words such as texts or strengths. Endings also transfer well: -cja usually becomes -tion and -sja usually becomes -sion.

Should Polish learners use British or American spelling?

Either is correct, and IELTS, TOEFL and the Cambridge exams accept both. Many Polish schools teach British English, while films and work often bring in American forms, so learners easily mix the two. Choose one system, use it consistently in each document, and set your spell-checker to the same variety.

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