Acting as or providing a complement (something that completes the whole).

synonyms: complemental, complementary.

Roget 52: complete, entire; whole etc. 50; perfect etc. 650; full, good, absolute, thorough, plenary; solid, undivided; with all its parts; all-sided.    exhaustive, radical, sweeping, thorough-going; dead.    regular, consummate, unmitigated, sheer, unqualified, unconditional, free; abundant etc. (sufficient) 639.    brimming; brimful, topful, topfull; chock full, choke full; as full as an egg is of meat, as full as a vetch; saturated, crammed; replete etc. (redundant) 641; fraught, laden; full-laden, full-fraught, full-charged; heavy laden.    completing etc. v.; supplemental, supplementary; ascititious^†.    ... show more

Roget 729: completing, final; concluding, conclusive; crowning etc. v.; exhaustive.    done, completed etc. v.; done for, sped, wrought out; highly wrought etc. (preparation) 673; thorough etc. 52; ripe etc. (ready) 673.    ... show more

Polish: komplementarny, uzupełniający