Dictionary

complementary

adj.
1.acting as or providing a complement (something that completes the whole)
2.of words or propositions so related that each is the negation of the other
3.of or relating to or suggestive of complementation complementary n.
1.either one of two chromatic colors that when mixed together give white (in the case of lights) or gray (in the case of pigments)

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complementarity

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complementary angles

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swelled head

a feeling that one is more important than one really is

The man has a swelled head since he got the new position in his company.

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