be lost in thought

Examples (10)

• He often gets lost in thought during his morning commute.
• She was lost in thought, completely unaware of the rain starting.
• The professor frequently becomes lost in thought while lecturing.
• Don't disturb him; he seems to be lost in deep thought.
• I found her sitting by the window, lost in her own thoughts.
• He must have been lost in thought if he didn't notice me.
• Sometimes, I like to be lost in thought and just let my mind wander.
• The artist stood before his canvas, lost in creative thought.
• She looked up, as if waking from a dream, having been lost in thought for a long time.
• The old man sat on the bench, seemingly lost in thought about his past.