Which to use
“compel” is a verb and “complex” is an adjective - they look or sound alike but fill different roles in a sentence.
- #20,067
- “compel” frequency rank
- #1,449
- “complex” frequency rank
- 21516
- confusion score
Side-by-Side Comparison
| Feature | compel | complex |
|---|---|---|
| Definition | To drive together, round up. | Made up of multiple parts; composite; not simple. |
Where the eye mixes compel and complex
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Why the eye confuses compel with complex
These two trip readers on the page rather than in the ear: compel is /kəmˈpɛl/ while complex is /ˈkɒmplɛks/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 21516, derived from the frequency rank of both members and their visual similarity.
compel is recorded at frequency rank #20,067, classified as averb, pronounced /kəmˈpɛl/. complex is at rank #1,449, tagged as anadj, pronounced /ˈkɒmplɛks/.
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 21516, this pair ranks #423,335 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of compel vs complex
Shared letters: celmop. Private to "compel": -. Private to "complex": x.
"compel" · 6 letters · shape CVCCVC · "complex" · 7 letters · shape CVCCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "compel" for "complex" ever safe?
In ordinary English text, does "compel" or "complex" show up more?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "compel" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "complex" - compare definitions side by side with the headword page. Word entry
- This pair ranks #423,335 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "compel" and "complex" also get mixed up with nearby pairs, the highest-scored neighbour is "compel vs Cowper". 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 #423,335 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.