Breadcrumb Home > 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: triumphalism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language