sceptic noun

VERB + SCEPTIC convince, win over He has managed to convince even the sceptics. | confound

SCEPTIC + VERB argue sth, point out sth, say sth Sceptics will argue that no such scheme has ever proved successful.

PREP. ~ about She is a sceptic about the dangers of global warming.

PHRASES prove the sceptics right/wrong Events since the elections have proved the sceptics right.