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

See also: thoughtful

• cigar butt
• cigar cutter
• cigar lighter
• cigar smoker
• cigar-box cedar
• cigar-shaped
• cigaret
• cigarette
• cigarette burn
• cigarette butt
• cigarette case
• cigarette holder
• cigarette lighter
• cigarette paper
• cigarette smoker
• cigarfish
• cigarillo
• ciggy
• cilantro
• cilial
• ciliary
• ciliary artery
• busy
• busy bee
• busybodied