Which to use
“kook” is a noun and “kool” is a verb - they look or sound alike but fill different roles in a sentence.
- #43,741
- “kook” frequency rank
- #20,684
- “kool” frequency rank
- 64425
- confusion score
Side-by-Side Comparison
| Feature | kook | kool |
|---|---|---|
| Definition | An eccentric, strange or crazy person. | To look; to pay attention to with one’s eyes. |
Letter map: kook vs kool
Shared letters muted; letters that set kook and kool apart highlighted. Shared run: 3.
Grammar separator: kook vs kool
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: kook is anoun and koolaverb. On the page they differ by a single letter - k in “kook” becomes l in “kool”. Our composite confusion score for this pair is 64425, derived from the frequency rank of both members and their visual similarity.
kook is recorded at frequency rank #43,741, classified as anoun, pronounced /kuːk/. kool is at rank #20,684, tagged as averb.
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 64425, this pair ranks #77,783 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of kook vs kool
Shared letters: ko. Private to "kook": -. Private to "kool": l.
"kook" · 4 letters · shape CVVC · "kool" · 4 letters · shape CVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "kook" for "kool" ever safe?
In ordinary English text, does "kook" or "kool" show up more?
After this comparison
Pair "kook" vs "kool" is on the table, pick a follow-up below.
- Full dictionary entry for "kook" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "kool" - compare definitions side by side with the headword page. Word entry
- This pair ranks #77,783 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "kook" and "kool" also get mixed up with nearby pairs, the highest-scored neighbour is "kook vs Kop". 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 #77,783 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.