1. Marked by excessive self-indulgence and moral decay
   "a group of effete self-professed intellectuals"
   - decadent 
2. Lacking in power or forcefulness
   - ineffective, ineffectual, unable

See also: impotent, indulgent

• genus Cosmos
• genus Costia
• genus Cotinga
• genus Cotinus
• genus Cotoneaster
• genus Cottus
• genus Cotula
• genus Coturnix
• genus Coumarouna
• genus Cracticus
• genus Crambe
• genus Crangon
• genus Craspedia
• genus Crassostrea
• genus Crassula
• genus Crataegus
• genus Crateva
• genus Crax
• genus Crepis
• genus Crescentia
• genus Crex
• genus Cricetus
• genus Crocethia
• genus Crocodilus
• genus Crocodylus