/ Dictionary / Index A assail: Meaning and Definition of Find definitions for: as•sail Pronunciation: (u-sāl'), [key] — v.t. to attack vigorously or violently; assault. to attack with arguments, criticism, ridicule, abuse, etc.: to assail one's opponent with slander. to undertake with the purpose of mastering: He assailed his studies with new determination. to impinge upon; make an impact on; beset: His mind was assailed by conflicting arguments. The light assailed their eyes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: assail (Thesaurus) assai assailant Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language