Positivist

n.

1.

A believer in positivism.

Noun	1.	positivist - someone who emphasizes observable facts and excludes metaphysical speculation about origins or ultimate causes Synonyms: rationalist
Adj.	1.	positivist - of or relating to positivism; "positivist thinkers"; "positivist doctrine"; "positive philosophy" Synonyms: positivistic, positive

ass, bigot, bitter-ender, bullethead, diehard, doctrinaire, dogmatist, dogmatizer, donkey, fanatic, hardnose, infallibilist, intransigeant, intransigent, last-ditcher, maverick, mule, opinionist, perverse fool, pighead, practical person, pragmatist, purist, realist, standpat, standpatter, stickler