Middle English, from Anglo-French soiller, suiller, from Old French soil wallow of a wild boar, abyss, from Latin solium chair, bathtub; akin to Latin sedēre to sit
— more at sit
Date:
13th century
transitive verb1: to stain or defile morally :corrupt2: to make unclean especially superficially :dirty3: to blacken or taint (as a person's reputation) by word or deedintransitive verb: to become soiled or dirty