Strong's #471: antepo (pronounced an-tep'-o)

from 473 and 2036; to refute or deny:--gainsay, say against.

Thayer's Greek Lexicon:

̓́

antepō

1) to speak against, gainsay

Part of Speech: verb

Relation: from G473 and G2036

Usage:

This word is used 2 times:

 

Luke 21:15: "adversaries shall not be able to gainsay nor resist."
Acts 4:14: "with them, they could say nothing against"