Noun

• S: (n) muser, muller, ponderer, ruminator (a reflective thinker characterized by quiet contemplation)
• direct hypernym / inherited hypernym / sister term
• S: (n) thinker (someone who exercises the mind (usually in an effort to reach a decision))
• S: (n) brainworker, brain-worker (someone whose profession involves using his head to solve problems)
• S: (n) classifier (a person who creates classifications)
• S: (n) divergent thinker (a thinker who moves away from the problem as stated and often has novel ideas and solutions)
• S: (n) excogitator (a thinker who considers carefully and thoroughly)
• S: (n) muser, muller, ponderer, ruminator (a reflective thinker characterized by quiet contemplation)
• S: (n) organizer, organiser, arranger (a person who brings order and organization to an enterprise) "she was the organizer of the meeting"
• S: (n) philosophizer, philosophiser (someone who considers situations from a philosophical point of view)
• S: (n) problem solver, solver, convergent thinker (a thinker who focuses on the problem as stated and tries to synthesize information and knowledge to achieve a solution)
• S: (n) reasoner, ratiocinator (someone who reasons logically)
• S: (n) rocket scientist (a clever thinker) "you do not have to be a rocket scientist to figure that out"
• S: (n) speculator (someone who makes conjectures without knowing the facts)
• derivationally related form