to undergo a complete change in form, nature, or character, often likened to a metamorphosis

to shed or cast off an old skin, shell, or exoskeleton during growth or pupation

to be transformed or metamorphosed; (figuratively) to become corrupt or morally degraded

to degenerate morally; to become depraved

the cast-off skin of a cicada, often used as an ingredient in traditional Chinese medicine

to shed skin, or the cast-off skin or shell of an insect or reptile

to exuviate or molt