Strong's #1128: gumnazo (pronounced goom-nad'-zo)

from 1131; to practise naked (in the games), i.e. train (figuratively):--exercise.

Thayer's Greek Lexicon:

́

gumnazō

1) to exercise naked (in a palaestra or school of athletics)

2) to exercise vigorously, in any way, either the body or the mind

Part of Speech: verb

Relation: from G1131

Citing in TDNT: 1:775, 133

Usage:

This word is used 4 times:

 

1 Timothy 4:7: "old wives' fables, and exercise thyself rather unto godliness."
Hebrews 5:14: "even those who by reason of use have their senses exercised to discern both"
Hebrews 12:11: "it yieldeth the peaceable fruit of righteousness unto them which are exercised thereby."
2 Peter 2:14: "souls: a heart they have exercised with covetous practices; cursed children:"