/ Dictionary / Index I in-group: Meaning and Definition of Find definitions for: in-group Pronunciation: (in'grp"), [key] — n. a narrow exclusive group; clique. a group of people sharing similar interests and attitudes, producing feelings of solidarity, community, and exclusivity. Cf. out-group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: in-group (Thesaurus) Ingrid ingrowing Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language