Strong's G5121 · Greek

τοὐναντίον

tounantion · too-nan-tee'-on

contraction for the neuter of 3588 and 1726; on the contrary

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 3 τοὐναντίον by crasis for τὸ ἐνανίον , neut. acc, used adverbially, on the contrary, contrariwise : II Co 2:7 , Ga 2:7 , I Pe 3:9 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain