Complement vs Complete

When to use each in English, with meaning, register, and examples.

Complement

Top 2,000 (common)C1verb

Complete

Top 1,000 (very common)A1adjective
Most common: Complete
 ComplementComplete
Pronunciation🇬🇧 /["/ˈkɒmplɪment/","/ˈkɒmplɪments/","/ˈkɒmplɪmentɪd/","/ˈkɒmplɪmentɪŋ/"]/🇺🇸 /["/ˈkɑːmplɪment/","/ˈkɑːmplɪments/","/ˈkɑːmplɪmentɪd/","/ˈkɑːmplɪmentɪŋ/"]/🇬🇧 /["/kəmˈpliːt/"]/🇺🇸 /["/kəmˈpliːt/"]/
MeaningSomething that goes well with something else or completes it.To finish something completely.
ExampleThe excellent menu is complemented by a good wine list.The puzzle is now complete after I found the last piece.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelC1A1
Part of speechverbadjective
Collocationsnicely, well, perfectlybe, seem, survive, remarkably, very, far from, be, seem, almost, nearly, substantially
Antonymsdetract, contrastincomplete, unfinished, partial
Common mistakesConfused with 'compliment', which means to praise someone., Using 'complement' in the wrong context, like to mean 'complete'., Incorrectly spelling it as 'complement' when referring to praise.Confused with 'finished' — both mean to end, but 'complete' emphasizes fullness., Using 'complete' when a task is partially done., 'Complete' is sometimes incorrectly used as a noun.
Usage notesUse 'complement' when talking about adding something that enhances or completes another thing. It's appropriate in both casual and formal contexts, but avoid using it in situations that require a different meaning like 'compliment'.Use 'complete' in academic or professional contexts when discussing tasks, projects, or forms. Avoid using it in overly casual conversations.

Frequently asked questions: Complement vs Complete

What's the difference between Complement and Complete?

Complement: Something that goes well with something else or completes it. Complete: To finish something completely.

Which is more common: Complement and Complete?

Complete is the most common in everyday English.

Are Complement and Complete the same CEFR level?

Complement: C1, Complete: A1 on the CEFR scale.

Can I use Complement and Complete interchangeably?

Not always. Complement and Complete are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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