Which to use
“know” is a verb and “kook” is a noun - they look or sound alike but fill different roles in a sentence.
- #84
- “know” frequency rank
- #43,741
- “kook” frequency rank
- 43825
- confusion score
Side-by-Side Comparison
| Feature | know | kook |
|---|---|---|
| Definition | To perceive the truth or factuality of; to be certain of; to be certain that. | An eccentric, strange or crazy person. |
Where the eye mixes know and kook
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between know and kook
These two trip readers on the page rather than in the ear: know is /nəʊ/ while kook is /kuːk/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 43825, derived from the frequency rank of both members and their visual similarity.
know is recorded at frequency rank #84, classified as averb, pronounced /nəʊ/. kook is at rank #43,741, tagged as anoun, pronounced /kuːk/.
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 43825, this pair ranks #236,339 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of know vs kook
Shared letters: ko. Private to "know": nw. Private to "kook": -.
"know" · 4 letters · shape CCVC · "kook" · 4 letters · shape CVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "know" for "kook" ever safe?
Which is more common, "know" or "kook"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "know" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "kook" - compare definitions side by side with the headword page. Word entry
- This pair ranks #236,339 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "know" and "kook" 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 #236,339 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.