1. Deeply absorbed in thought
   - bemused, lost, preoccupied

See also: thoughtful

• impassionate
• impassioned
• impassive
• impassively
• impassiveness
• impassivity
• impasto
• impatience
• impatiens
• Impatiens capensis
• impatient
• impatiently
• impeach
• impeachability
• impeachable
• impeacher
• impeachment
• impeccability
• impeccable
• impeccably
• impeccant
• impecuniosity
• impecunious
• impecuniousness
• impedance