/ Dictionary / Index A acclivity: Meaning and Definition of Find definitions for: ac•cliv•i•ty Pronunciation: (u-kliv'i-tē), [key] — pl. -ties. an upward slope, as of ground; an ascent (opposed to declivity). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acclivity (Thesaurus) acclimatize accolade Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language