verb (used with object), a·based, a·bas·ing.
Origin of abase
Word Origin for abase
late 14c., abaishen, from Old French abaissier "diminish, make lower in value or status" (12c.), from Vulgar Latin *ad bassiare "bring lower," from Late Latin bassus "thick, fat, low;" from the same source as base (adj.) and altered 16c. in English by influence of it, which made it an exception to the rule that Old French verbs with stem -iss- enter English as -ish. Related: Abased; abasing.