Spelling.School · How to spell

How to spell certain

Certain is spelled C-E-R-T-A-I-N. An E after the C, and the same -TAIN ending as curtain and captain.

hear itcer·tain/'sɜrtən/adjectiveLong vowels

What it means: Having no doubt; confident and assured.

In a sentence: She is certain that her cat loves to play with strings.

The part people get wrong

Watch for an unstressed vowel that is hard to hear.

Same family: certainty, certainly, uncertain, uncertainty, certify. If you can spell one, the shared part carries to the others.

Where it comes from: Certain comes from the Latin word 'certus,' meaning 'sure' or 'fixed.' It entered English through Old French, which is why its spelling looks less phonetic than it sounds.

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