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

See also: composed

• smart
• smart alec
• smart aleck
• smart as a whip
• smart bomb
• smart card
• smart casual
• smart money
• smart set
• smart-arse
• smart-ass
• smarta
• smarten
• smarten up
• smartie
• smarting
• smartly
• smartness
• smartphone
• smarts
• smarty
• smartypants
• smash
• smash hit
• smash-and-grab