[ἀφειδία] from a compound of G1 (as a negative particle) and G5339; unsparingness, i.e. austerity (asceticism)
Usages throughout the bible
Colossians 2:23
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Which things have indeed a shew of wisdom in will worship, and humility, and neglecting G857 of the body; not in any honour to the satisfying of the flesh.