to attack with false, malicious, and damaging charges or insinuations; slander.
2.
to sprinkle; bespatter.
Origin: 1480–90; < Latinaspersus besprinkled (past participle of aspergere), equivalent to a-a-5 + -sper- (combining form of spar-, variant of sparg-sparge) + -sus, variant of -tus past participle suffix
late 15c., "to besprinkle," from L. aspersus, pp. of aspergere (see aspersion). Meaning "to bespatter someone's character with rumor and false reports" is recorded from 1610s.