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adj C1 Advanced Uncommon

complementary

komp-lih-MEHNT-ree

Complementary (adj) means combining well with something else so that together they form a complete or improved whole. Example: “Their skills are complementary — she's creative, and he's highly organized.”

adj
1
Combining well with something else so that together they form a complete or improved whole.
"Their skills are complementary — she's creative, and he's highly organized."
"The wine and cheese had wonderfully complementary flavors."
noun
1
An angle that, added to another, equals ninety degrees.
"A 30-degree angle and a 60-degree angle are complementary."

How to Use Complementary

Learner’s notes

In plain EnglishFitting together well with something else to make a better whole.

Common mistake

Easily confused with "complimentary," which means either free of charge or expressing praise. "Complementary" is about things fitting together.

Easily confused with
Common pairings
complementary colors complementary skills complementary angle

Word Forms

more complementary comparative, complementaries plural, most complementary superlative

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Fill the Gap

Can you complete this real example?

Their skills are _____ — she's creative, and he's highly organized.

Etymology

From complement plus -ary; a near-twin spelling of "complimentary," which instead relates to praise.

Related Words

Rhymes for complementary

See all rhymes for complementary →

Frequently Asked Questions

What does “complementary” mean?

The word “complementary” means combining well with something else so that together they form a complete or improved whole. In plain terms, fitting together well with something else to make a better whole.

How do you pronounce “complementary”?

“Complementary” is pronounced komp-lih-MEHNT-ree (/ˌkɑmplɪˈmɛnt(ə)ɹi/ in IPA).

How do you use “complementary” in a sentence?

Here is “complementary” used in a sentence: “Their skills are complementary — she's creative, and he's highly organized.”

What part of speech is “complementary”?

Depending on how it is used, “complementary” can be an adjective and a noun.

Is “complementary” a common word?

“Complementary” is an uncommon word in modern English, usually learned at around the C1 level.

How many meanings does “complementary” have?

“Complementary” has 2 distinct senses listed in this dictionary. The most common is: combining well with something else so that together they form a complete or improved whole.

What is the difference between complementary and complimentary?

Complementary means combining well with something else to form a complete or improved whole, as in complementary colors or complementary skills, while complimentary means given free of charge or expressing praise, as in a complimentary drink. The two words are pronounced alike but spelled differently and have unrelated meanings.

What are complementary angles?

Complementary angles are two angles that add up to exactly ninety degrees, a specific mathematical use of the word distinct from its general meaning of things that combine well together. This sense is common in geometry rather than everyday speech.

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Definitions: FreeDict original editorial