assail (v.)youdaoicibaDictYouDict
c. 1200, from Old French assalir "attack, assault, assail" (12c., Modern French assaillir), from Vulgar Latin *adsalire "to leap at," from Latin ad- "at" (see ad-) + salire "to leap" (see salient (adj.)). Figurative use from mid-14c. Related: Assailed; assailing; assailable.
insult (v.)youdaoicibaDictYouDict
1560s, "triumph over in an arrogant way," from Middle French insulter (14c.) and directly from Latin insultare "to assail, to leap upon" (already used by Cicero in sense of "insult, scoff at, revile"), frequentative of insilire "leap at or upon," from in- "on, at" (see in- (2)) + salire "to leap" (see salient (adj.)). Sense of "to verbally abuse, affront, assail with disrespect" is from 1610s. Related: Insulted; insulting.