The Greek adjective gymnos means naked, bare, or poorly clothed — lacking outer garments. In classical Greek it primarily meant unclothed; in the New Testament it has a range from completely naked to merely stripped of outer clothing. It is used literally for nudity and metaphorically for spiritual vulnerability and exposure before God.
Scripture uses gymnos in multiple registers. Physically, nakedness is associated with shame and exposure (Genesis 3; Revelation 3:17). Spiritually, 'everything is uncovered (gymnos) and laid bare before the eyes of him to whom we must give account' (Hebrews 4:13). The theological arc runs from Adam and Eve's nakedness as pre-shame innocence, through the Fall's shame, to Christ 'despising the shame' of the cross (Hebrews 12:2), to the final white robes of the redeemed — God clothing those who were naked in His righteousness.