/ Dictionary / Index C countervail: Meaning and Definition of Find definitions for: coun•ter•vail Pronunciation: (koun"tur-vāl'), [key] — v.t. to act or avail against with equal power, force, or effect; counteract. to furnish an equivalent of or a compensation for; offset. to equal. —v.i. to be of equal force in opposition; avail. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: countervail (Thesaurus) countertype counterview Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language