refuse (v.)

c. 1300, from Old French refuser "reject, disregard, avoid" (12c.), from Vulgar Latin *refusare, frequentative form from past participle stem of Latin refundere "give back, restore, return," literally "pour back, flow back," from re- "back" (see re-) + fundere "to pour" (from nasalized form of PIE root *gheu- "to pour"). Related: Refused; refusing.

mid-14c., "an outcast;" mid-14c., "a rejected thing, waste material, trash," from Old French refus "waste product, rubbish; refusal, denial, rejection," a back-formation from the past participle of refuser "reject, disregard, avoid" (12c.), from Vulgar Latin *refusare, frequentative form from past participle stem of Latin refundere "give back, restore, return," literally "pour back, flow back," from re- "back" (see re-) + fundere "to pour" (from nasalized form of PIE root *gheu- "to pour"). As an adjective from late 14c., "despised, rejected;" early 15c., "of low quality."