thinker Meaning, Definition & Usage

  1. noun an important intellectual
    mind; creative thinker.
    • the great minds of the 17th century
  2. noun someone who exercises the mind (usually in an effort to reach a decision)

WordNet

Think"er noun
Definitions
  1. One who thinks; especially and chiefly, one who thinks in a particular manner; as, a close thinker; a deep thinker; a coherent thinker.

Webster 1913