/ Dictionary / Index S slier: Meaning and Definition of Find definitions for: sli•er Pronunciation: (slī'ur), [key] — adj. a comparative of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: slier (Thesaurus) sliding vector sliest 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