καταγωνίζομαιkatagōnízomai

to struggle against, i.e. (by implication) to overcome

Greek (New Testament) · G2610

Meanings

1. to struggle against.

2. to conquer, overcome: Hebrews 11:33.

Same root

κατάkatá · G2596(prepositionally) down (in place or time), in varied relations (according to the case (genitive, dative or accusative) with which it is joined)
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 11:33 By faith these people overthrew kingdoms, ruled with justice, and received what God had promised them. They shut the mouths of lions,

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