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

• piassava
• piassava palm
• piaster
• piastre
• piazza
• PiB
• pibgorn
• Pibit
• pibroch
• pic
• pica
• pica em
• Pica pica hudsonia
• pica-pica
• picador
• picaninny
• Picardie
• Picardy
• picaresque
• Picariae
• picaro
• picaroon
• Picasso
• picayune
• piccalilli