Archaic KJV Word
Girdle
Modern equivalent: belt
What Was Lost
The action of readiness. To gird was to prepare your body for urgent work or battle by cinching your flowing garments tight. The girdle of truth in Ephesians was not a decorative accessory but the first piece of armor -- without it, you tripped over your own robes. The word conveyed combat readiness, not fashion.
Closest Survivor in Modern English
gird (the verb 'gird up your loins' is still understood as 'prepare for action')
Peak Usage (1611)
KJV Ephesians 6:14 -- 'Having your loins girt about with truth'; Matthew 3:4 -- 'John had a leather girdle about his loins'
Died ~1950
The word was claimed by the women's undergarment industry (corset-like shapewear), making biblical descriptions of warriors and prophets belting up for action sound like lingerie advertisements.
What Replaced It
“belt”
Purely functional; a girdle was worn to gather robes for action, to carry weapons, and to brace the core for labor or battle
“sash”
Decorative; girdle was utilitarian and essential for readiness
“waistband”
Passive clothing component; girdle was actively put on as preparation for work or war