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.
You can also check other dicts: sceptic (English, 中文解释 ), wordnet sense, Collins Definition