Satisfy
late Middle English: from Old French satisfier, formed irregularly from Latin satisfacere ‘to content’, from satis ‘enough’ + facere ‘make’.
wiktionary
From Middle English satisfyen, satisfien, from Old French satisfiier, satisfier (also Old French satisfaire), from Latin satisfacere, present active infinitive of satisfaciō, from satis(“enough, sufficient”) + faciō(“I make, I do”).
etymonline
satisfy (v.)
early 15c., satisfien, "do penance, make atonement," also "appease, assuage, content; fulfill (a desire), satiate (an appetite)," from Old French satisfiier "pay, repay, make reparation" (14c., Modern French satisfaire), from Latin satisfacere "discharge fully, comply with, make amends," literally "do enough," from satis "enough" (from PIE root *sa- "to satisfy") + facere "to make, do, perform" (from PIE root *dhe- "to set, put"). From mid-15c. as "make amends, pay damages." Related: Satisfied; satisfying.
