Толковый словарь английского языка Oxford English Reference - sceptic

n. & adj. (US skeptic) --n. 1 a person inclined to doubt all accepted opinions; a cynic. 2 a person who doubts the truth of Christianity and other religions. 3 hist. a person who accepts the philosophy of Pyrrhonism. --adj. = SCEPTICAL. Derivatives scepticism n. Etymology: F sceptique or L scepticus f. Gk skeptikos (as SCEPSIS)