1. (noun) either one of two chromatic colors that when mixed together give white (in the case of lights) or grey (in the case of pigments)

• complementary color

2. (adjective) acting as or providing a complement (something that completes the whole)

• complemental
• completing

1. (adjective) of words or propositions so related that each is the negation of the other

• antonymous

2. (adjective) acting as or providing a complement (something that completes the whole)

• additive

1. (noun) either one of two chromatic colors that when mixed together give white (in the case of lights) or grey (in the case of pigments)

• chromatic color
• chromatic colour
• spectral color
• spectral colour

1. (adjective) acting as or providing a complement (something that completes the whole)

• accompaniment
• accompaniment
• complement
• complement
• complement
• complement
• full complement
• complementarity