ἄθλησις (áthlēsisath'-lay-sisnouncontest)
[Grk] ἄθλησις LN: 50.3, 74.13 GK: G124, G125
Derivation: from ἀθλέω;
Strong's: a struggle (figuratively)
KJV: --fight.
See: ἀθλέω