/ Dictionary / Index R rattish: Meaning and Definition of Find definitions for: rat•tish Pronunciation: (rat'ish), [key] — adj. of, pertaining to, characteristic of, or resembling a rat. infested with rats. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Rattigan rattle Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language