complement

1 complement /ˈkɑːmpləmənt/ noun
plural complements
1 complement
/ˈkɑːmpləmənt/
noun
plural complements
Britannica Dictionary definition of COMPLEMENT
[count]
1 
: something that completes something else or makes it better
2 
: the usual number or quantity of something that is needed or used
3 
grammar : a word or group of words added to a sentence to make it complete
2 complement /ˈkɑːmpləˌmɛnt/ verb
complements; complemented; complementing
2 complement
/ˈkɑːmpləˌmɛnt/
verb
complements; complemented; complementing
Britannica Dictionary definition of COMPLEMENT
[+ object]
: to complete something else or make it better