Which to use
“afoul” is an adverb and “atoll” is a noun - they look or sound alike but fill different roles in a sentence.
- #45,192
- “afoul” frequency rank
- #34,784
- “atoll” frequency rank
- 79976
- confusion score
Side-by-Side Comparison
| Feature | afoul | atoll |
|---|---|---|
| Definition | In a state of collision or entanglement. | A type of island consisting of a ribbon reef that nearly or entirely surrounds a lagoon and supports, in most cases, one to many islets on the reef platform. |
Where the eye mixes afoul and atoll
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. afoul (VCVVC) and atoll (VCVCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Look-alike desk: afoul vs atoll
These two trip readers on the page rather than in the ear: afoul is /əˈfaʊl/ while atoll is /ˈætɒl/. 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 (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 79976, derived from the frequency rank of both members and their visual similarity.
afoul is recorded at frequency rank #45,192, classified as anadv, pronounced /əˈfaʊl/. atoll is at rank #34,784, tagged as anoun, pronounced /ˈætɒl/.
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 79976, this pair ranks #20,852 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of afoul vs atoll
Shared letters: alo. Private to "afoul": fu. Private to "atoll": t.
"afoul" · 5 letters · shape VCVVC · "atoll" · 5 letters · shape VCVCC
Known mistypes of this pair
Frequently Asked Questions
Can "afoul" and "atoll" be used interchangeably?
Which is more common, "afoul" or "atoll"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "afoul" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "atoll" - compare definitions side by side with the headword page. Word entry
- This pair ranks #20,852 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "afoul" and "atoll" also get mixed up with nearby pairs, the highest-scored neighbour is "afoul vs AWOL". 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 #20,852 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.