evidentialist adjective 1noun 1forms 3 adjective1 •Of or supporting evidentialism, the doctrine that evidence is of primary importance in questions of beliefAn evidentialist variant would require the agent be responsive to a telling evidential basis for thinking that p obtains in contrast to the alternatives. — 2008 noun1 •One who supports or argues for evidentialism formsevidentialists · more evidentialist · most evidentialist