1. Of persons; marked by failure to realize full potentialities
   - unfulfilled, unrealized

See also: unsuccessful

• concierge
• conciliable
• conciliate
• conciliation
• conciliative
• conciliator
• conciliatory
• concinnity
• concise
• concisely
• conciseness
• concision
• conclave
• conclude
• concluded
• concluding
• conclusion
• conclusion of law
• conclusive
• conclusively
• conclusiveness
• conclusory
• concoct
• concoction
• concomitance