Meaning

verb pay back

verb make repayment for or return something

verb act or give recompense in recognition of someone's behavior or actions

originFrom Old French repaier (“to pay back”), from re- + paiier (“to pay”), from Latin pācāre (“to settle, to make peaceful”), from pāx (“peace”) + -ō (forming verbs). Equivalent to re- + pay. Cognate with repacify and French repayer (“to pay again”).

Etymology from Wiktionary, CC BY-SA 3.0