thinking thinking /ˈθɪŋkɪŋ/

adjective

1. Endowed with the capacity to reason  ( reasoning , thinking , intelligent )
   endowed with the capacity to reason
   

noun

1. () The process of using your mind to consider something carefully  ( cerebration , intellection , mentation , thinking , thought , thought process )
   the process of using your mind to consider something carefully
    Thinking always made him frown
   thinking always made him frown
    She paused for thought
   she paused for thought