物もの思おもいに耽ふける

expression, godan verb (-ru)

be lost in deep thought; be deeply immersed in thought

Describes a state of being absorbed in one's own thoughts, often with a slightly melancholic or wistful nuance. The phrase is a set expression combining 物思い (deep thought, musing) and 耽る (to be absorbed in).

• 彼かれは窓まど辺べに座すわって物もの思おもいに耽ふけっていた。

  He sat by the window, lost in deep thought.

• 物もの思おもいに耽ふけっていると、時じ間かんが経たつのを忘わすれてしまう。

  When I'm deeply immersed in thought, I lose track of time.