Synonyms of 'sceptic'
1 doubterDictionary, cynic, scoffer
He was a born sceptic.
I am too much of a sceptic to deny the possibility of anything
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An agnostic believes that it is not possible to know whether God exists or not. Compare atheist.
He was, if not an atheist, an agnostic.
A cynic is someone who believes that people always act selfishly.
A cynic might see this as simply a ploy to make us part with more money.
Thesaurus for sceptic from the Collins English Thesaurus
A sceptic is a person who has doubts about things that other people believe.