coolsvscrooksWhich spelling fits?

Quick tell: cools is a verb, crooks is a noun, so they fill different roles in a sentence.

Which to use

“cools” is a verb and “crooks” is a noun - they look or sound alike but fill different roles in a sentence.

#27,099
“cools” frequency rank
#21,766
“crooks” frequency rank
48865
confusion score

Side-by-Side Comparison

Feature cools crooks
Definition third-person singular simple present indicative of cool plural of crook

Where the eye mixes cools and crooks

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
cools
6 ch
crooks

Why the eye confuses cools with crooks

These two trip readers on the page rather than in the ear: cools is /kuːlz/ while crooks is /kɹʊks/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 48865, derived from the frequency rank of both members and their visual similarity.

cools is recorded at frequency rank #27,099, classified as averb, pronounced /kuːlz/. crooks is at rank #21,766, tagged as anoun, pronounced /kɹʊks/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 48865, this pair ranks #189,060 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cools vs crooks

Shared letters: cos. Private to "cools": l. Private to "crooks": kr.

"cools" · 5 letters · shape CVVCC  ·  "crooks" · 6 letters · shape CCVVCC

Known mistypes of this pair

  • coolsccools · colos · cols · coolls · coolss · coosl · ocols
  • crooksccrooks · coroks · crokos · croks · crookks · crookss · croosk · crrooks

Frequently Asked Questions

Is swapping "cools" for "crooks" ever safe?
No - they are not even the same part of speech. "cools" is a verb and "crooks" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "cools" or "crooks" show up more?
"crooks" is the more common of the two: it sits at frequency rank #21,766 in our English list, against #27,099 for "cools". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "cools" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "crooks" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #189,060 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "cools" and "crooks" also get mixed up with nearby pairs, the highest-scored neighbour is "coms vs cools". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #189,060 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list