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Definition of complement

complement

/ˈkɑːm.plə.mənt/
com · ple · ment

Adverb:complementarily
•
Plural:complements
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Adjective:complementary
•
Past Simple:complemented
•
Past Participle:complemented
•
Present Participle:complementing
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complement Lexical Profile

complement Game Scores & Validity

• noun

1

A thing that completes, brings to perfection, or goes well with something else.

Example

"The tart cranberry sauce is an ideal complement to the rich roast turkey."


2

A number or quantity of something, especially that required to make a group complete.

Example

"The research vessel cannot set sail until it has a full complement of crew members and scientists."


3

A word, phrase, or clause added to a verb to complete the meaning of the predicate in a sentence.

Example

"In the sentence 'She became a doctor,' the noun phrase 'a doctor' functions as the subject complement."


4

The amount by which an angle is less than ninety degrees, or the elements not included in a given mathematical set.

Example

"Because the given angle measures thirty degrees, its geometric complement is sixty degrees."

Synonyms
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Antonyms
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• verb

1

To add to something in a way that enhances or improves it; to make something complete.

Example

"The warm wooden furniture nicely complements the natural stone walls of the cabin."

Synonyms
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Antonyms
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Word Nuance & Usage

Do not confuse 'complement' (something that completes or enhances another thing) with its homophone 'compliment' (an expression of praise or admiration).

• Rhymes for complement

Word Origin & Etymology

From Middle English, via Old French from Latin complementum ('that which fills up or completes'), derived from complēre ('to fill up').

Cite this Entry


Wordmom. (2026). Definition of Complement. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/complement
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