Lexical Definition

‎ἀνταποδίδωμι‎ antapodídōmi (an-tap-od-ee'-do-mee) to repay ^G:V
from ‎ἀντί‎ and ‎ἀποδίδωμι‎

recompense, render, repay.

• to requite (good or evil)

Abbott-Smith

ἀντ-απο-δίδωμι (ἀντί, ἀποδίδωμι), [in LXX for שׁלם pi., גּמל, שׁוּב hi., etc.;]
to give back as an equivalent, recompense, requital (the ἀντί expressing the idea of full, complete return; v. Lft., Notes, 46);
(a) in favourable sense: Lk 14:14, Ro 11:35, I Th 3:9;
(b) in unfavourable sense: Ro 12:19, II Th 1:6, He 10:30.†

Abbott-Smith References

Liddell-Scott-Jones

ἀνταποδίδωμι-δίδωμι,

give back, repay, tender in repayment or requital, [Refs]; ἀ. τὸ ὅμοιον, τὸἴσον, [Refs 5th c.BC+]; τὰ αὐτὰ ἀ. react in the same way, [Refs 5th c.BC+]; of counter-arguments, [Refs]: absolutely, pay back, [Refs 5th c.BC+]

__2 take vengeance, [LXX+NT]
__II assign as a balance, ἐναντίαν γένεσιν[Refs 5th c.BC+]
__II.2 make convertible, τὴν μεταφορὰν τὴν ἐκ τοῦ ἀνάλογον[Refs 4th c.BC+]:—passive, [Refs 4th c.BC+]
__II.2.b Grammars, make to correspond, of correlatives (e.g. τοιοῦτος, οἷος), in passive, [Refs 2nd c.AD+]; so of μέν.. δέ, [Refs 4th c.BC+]
__II.3 intransitive, answer to, correspond with, εἰ μὴ ἀνταποδίδωμιδιδοίη τὰ ἕτερα τοῖς ἑτέροις[Refs 5th c.BC+], compare b; οὐκ ἀνταποδίδωμιδίδωσι τὸ ὅμοιον there is no similar correspondent, [Refs 4th c.BC+]
__II.4 give back words, exchange 'tu quoque's', [Refs]
__III deliver in turn, τὸ σύνθημα[Refs 5th c.BC+]; explain in turn, [Refs 5th c.BC+]
__IV give back a sound, of an echo, [Refs 1st c.AD+]; of troops, κραυγὴν ἀ.[Refs]

_{LSJ Scripture Refs: LXX.Deut.32.35 ☩ Rom.12.19}