1. Marked by calm self-control (especially in trying circumstances); unemotional
   "stayed coolheaded in the crisis"
   - cool, nerveless

See also: composed

• concupiscence
• concupiscent
• concupiscible
• concur
• concurrence
• concurrency
• concurrent
• concurrent execution
• concurrent negligence
• concurrent operation
• concurrently
• concurring
• concurring opinion
• concuss
• concussion
• concussive
• condemn
• condemnable
• condemnation
• condemnatory
• condemner
• condemning
• condensable
• condensate
• condensation