Extended Strong's Greek Lexicon (Abbott-Smith based)
to repay
Usage: ἀντ-απο-δίδωμι (ἀντί ἀποδίδωμι), [in LXX for שָׁלַם pi., גָּמַל, שׁוּב hi., etc. ;] to give back as an equivalent, recompense, requital (the ἀντί expressing the idea of full, complete return; see Lft., Notes, 46); __(a) in favourable sense: Luk.14:14, Rom.11:35, 1Th.3:9; __(b) in unfavourable sense: Rom.12:19, 2Th.1:6, Heb.10:30.† (AS)