1. Not involved
   "being uninvolved he remained objective" 
2. Showing lack of emotional involvement
   "an uninvolved bystander"
   - dégagé, detached

See also: unconcerned

Antonym: involved

• improviser
• improvize
• imprudence
• imprudent
• imprudently
• impudence
• impudent
• impudently
• impudicity
• impugn
• impugnable
• impugner
• impuissance
• impuissant
• impulse
• impulse explosive
• impulse turbine
• impulse-buy
• impulsion
• impulsive
• impulsively
• impulsiveness
• impunity
• impure
• impurely