Noun thinker has 2 senses
  1. thinker, creative thinker, mind - an important intellectual; "the great minds of the 17th century"
    --1 is a kind of intellectual, intellect
    Derived form: verb think3
  2. thinker - someone who exercises the mind (usually in an effort to reach a decision)
    --2 is a kind of
    intellectual, intellect
    --2 has particulars:
     brainworker, brain-worker; classifier; divergent thinker; excogitator; muser, muller, ponderer, ruminator; organizer, organiser, arranger; philosophizer, philosophiser; problem solver, solver, convergent thinker; reasoner, ratiocinator; rocket scientist; speculator
    Derived form: verb think3
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