/ Dictionary / Index I isolationist: Meaning and Definition of Find definitions for: i•so•la•tion•ist Pronunciation: (ī"su-lā'shu-nist, is"u-), [key] — n. a person who favors or works for isolationism. —adj. of, pertaining to, or characteristic of isolationists or isolationism: to be accused of isolationist sympathies. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: isolationist (Thesaurus) isolationism isolative Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language