1. In a composed and unconcerned manner
   - coolly, nervelessly 
2. In an unconcerned manner
   - casually

See also: nonchalant

• triumphal
• triumphal arch
• triumphalism
• triumphalist
• triumphant
• triumphantly
• triumvir
• triumvirate
• triune
• trivalent
• trivalent live oral poliomyelitis vaccine
• Trivandrum
• trivet
• trivia
• trivial
• trivialise
• triviality
• trivialize
• trivially
• trivium
• TRM
• tRNA
• troat
• trocar
• trochaic