Synonyms of complementary

complementary

adjective

ˌkäm-plə-ˈmen-t(ə-)rē 

as in supplementary

related to each other in such a way that one completes the other

the complementary contributions of the cooking and cleanup committees were essential to the success of the church barbecue

Synonyms & Similar Words

• supplementary
• reciprocal
• mutual
• supplemental
• collective
• combined
• correlative
• cooperative
• communal
• joint
• symbiotic
• common
• shared
• conjoint
• united

Antonyms & Near Antonyms

• nonreciprocal
• noncomplementary

Example Sentences

Recent Examples of complementary

Cancellations and delays A complementary mission to Envision, NASA’s VERITAS radar orbiter, was supposed to launch in the late 2020s, but funding woes at NASA and the Jet Propulsion Laboratory forced a delay until no earlier than 2031. — Stephen Clark, ArsTechnica, 10 Sep. 2026

At their best—and paired intentionally with complementary foods —rice cakes can make a convenient base and a nutritious, satisfying snack. — Embry Roberts, Martha Stewart, 10 Sep. 2026

Others are looking for complementary non-fixed income products for investors who want less exposure to bonds. — Cheryl Winokur Munk, CNBC, 10 Sep. 2026

Next year, in 2027, NASA plans to launch another complementary mission called the Sun Coronal Ejection Tracker. — Mary Magnuson, The Conversation, 9 Sep. 2026