/ Dictionary / Index S subject complement: Meaning and Definition of Find definitions for: sub'ject com"plement Pronunciation: [key] — Gram. Gram. a word or a group of words, usually functioning as an adjective or noun, that is used in the predicate following a copula and describes or is identified with the subject of the sentence, as sleepy in The travelers became sleepy. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subject catalog subjectify Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language