| noun | a word or phrase used to complete a grammatical construction |
| noun | a complete number or quantity “a full complement” |
| noun | number needed to make up a whole force “a full complement of workers” |
| noun | something added to complete or embellish or make perfect “a fine wine is a perfect complement to the dinner” |
| noun | one of a series of enzymes in the blood serum that are part of the immune response |
| noun | either of two parts that mutually complete each other |
| verb | make complete or perfect; supply what is wanting or form the complement to “I need some pepper to complement the sweet touch in the soup” |
| complemental | adjective | acting as or providing a complement (something that completes the whole) |
| complement | verb | make complete or perfect; supply what is wanting or form the complement to |
| complementary | adjective | acting as or providing a complement (something that completes the whole) |
| complement | noun | something added to complete or embellish or make perfect |