sceptic /ˈskɛp.tɪk/noun 2adjective 1forms 3 noun2 •Someone who doubts beliefs, claims, plans, etc. that are accepted by others as true or appropriate, especially one who habitually does so.Even skeptics of the policy acknowledge that the Army conducted an exemplary insourcing program that successfully counteracted the Comptroller's budget ... — 2011 •Someone who is skeptical towards religion. adjective1 •Skeptical.This view of the Great Pyramid is being adopted by a widening circle of Christian believers, until even a skeptic scientist has dignified it as “the religion of the Pyramid!” — 1877 formssceptics · more sceptic · most sceptic