ἀνταγωνίζομαιantagōnízomai

to struggle against: followed by πρός, with accusative, Hebrews 12:4.

Greek (New Testament) · G464

Same root

ἀντίantí · G473opposite, i.e. instead or because of (rarely in addition to)
ἀγωνίζομαιagōnízomai · G75to struggle, literally (to compete for a prize), figuratively (to contend with an adversary), or genitive case (to endeavor to accomplish something)

Where it appears

Appears 1 times in the Bible.

Hebrews 12:4 After all, you have not yet given your lives in your struggle against sin.

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