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

See also: nonchalant

• introvert
• introverted
• introvertish
• introvertive
• intrude
• intrude on
• intruder
• intruding
• intrusion
• intrusive
• intrusiveness
• intrust
• intubate
• intubation
• intuit
• intuition
• intuitional
• intuitionism
• intuitionist
• intuitive
• intuitive feeling
• intuitively
• intumesce
• intumescence
• intumescency