Which to use
“complacent” is an adjective and “complement” is a noun - they look or sound alike but fill different roles in a sentence.
- #22,622
- “complacent” frequency rank
- #10,019
- “complement” frequency rank
- 32641
- confusion score
Side-by-Side Comparison
| Feature | complacent | complement |
|---|---|---|
| Definition | Uncritically satisfied with oneself or one's achievements; smug. | The totality, the full amount or number which completes something. |
Where the eye mixes complacent and complement
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: complacent is /kəmˈpleɪsənt/ while complement is /ˈkɒmpləmənt/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 32641, derived from the frequency rank of both members and their visual similarity.
complacent is recorded at frequency rank #22,622, classified as anadj, pronounced /kəmˈpleɪsənt/. complement is at rank #10,019, tagged as anoun, pronounced /ˈkɒmpləmənt/.
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 32641, this pair ranks #336,143 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of complacent vs complement
Shared letters: celmnopt. Private to "complacent": a. Private to "complement": -.
"complacent" · 10 letters · shape CVCCCVCVCC · "complement" · 10 letters · shape CVCCCVCVCC
Known mistypes of this pair
- complacent ← ccomplacent · cmoplacent · comlpacent · commplacent · compalcent · complaccent · complacennt · complacentt
- complement ← ccomplement · cmoplement · comlpement · commplement · compelment · compleemnt · complemennt · complementt
Frequently Asked Questions
Can "complacent" and "complement" be used interchangeably?
Which is more common, "complacent" or "complement"?
What to do next
You've compared "complacent" and "complement". Here's where to go from here.
- Full dictionary entry for "complacent" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "complement" - compare definitions side by side with the headword page. Word entry
- This pair ranks #336,143 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "complacent" and "complement" also get mixed up with nearby pairs, the highest-scored neighbour is "complacency vs complacent". 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
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.