1. Free from emotional agitation or nervous tension
   - unflurried, unperturbed, unruffled

See also: composed

• deferred payment
• defervesce
• defervescence
• defervescent
• defiance
• defiant
• defiantly
• defibrillate
• defibrillation
• defibrillator
• defibrinate
• deficiency
• deficiency disease
• deficient
• deficiently
• deficit
• deficit spending
• defier
• defilade
• defile
• defiled
• defilement
• defiler
• definable
• define