/ Dictionary / Index R rum-dum: Meaning and Definition of Find definitions for: rum-dum Pronunciation: (rum'dum"), [key] — Slang. Slang. —n. a stupid or ignorant person. drunkard; lush. —adj. stupid; ignorant. of, pertaining to, characteristic of, or arising from habitual drunkenness; addled by drink. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rumbustious Rumelia Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language