The adjective form of compliment is complimentary, which can describe something intended to be a compliment, as in complimentary remark, or it can be used to mean that something is given for free, as in I hope we get complimentary snacks on this flight.

Is complement a noun or adjective?

Synonyms and related words

​linguisticsin active clauses, the part of a clause that comes after a linking verb such as 'be', 'seem', or 'appear' and identifies or describes the subject. A complement is usually a noun or adjective.

What is a noun for compliment?

compliment. An expression of praise, congratulation, encouragement, or respect. (uncountable) Complimentary language; courtesy, flattery. Misspelling of complement.