WordNet: thinker

someone who exercises the mind (usually in an effort to reach a decision)

• hypernym intellect, intellectual

• hyponym brain-worker, brainworker

• hyponym classifier

• hyponym divergent thinker

• hyponym excogitator

• hyponym muller, muser, ponderer, ruminator

• hyponym arranger, organiser, organizer

• hyponym philosophiser, philosophizer

• hyponym convergent thinker, problem solver, solver

• hyponym ratiocinator, reasoner

• hyponym rocket scientist

• hyponym speculator

thinker

• (englanti) think (derivationally related)
• (suomi) ajattelija (synonyymi)