/ Dictionary / Index S slimsy: Meaning and Definition of Find definitions for: slim•sy Pronunciation: (slim'zē), [key] — adj. flimsy; frail. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. slimnastics slimy Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language