Spelling.School · How to spell

How to spell thin

hear itthin/θɪn/adjectiveSounds

What it means: Measuring a small distance between opposite sides.

In a sentence: The pencil is thin.

The part people get wrong

Often misspelled as then or thinn.

Same family: thinner, thinnest, thinly, thinness, slim. If you can spell one, the shared part carries to the others.

Where it comes from: Thin comes from Old English "þynne," meaning "narrow" or "not thick." It is related to German "dünn" and Dutch "dun," showing how many basic describing words in English have very old Germanic roots.

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