One who does not believe or have faith, as in God or a philosophy.
One who has rejected authority and dogma, especially in religious thinking, in favor of rational inquiry and speculation.
(Loosely, uncommon) A person who does not believe in a particular deity (any deity in a particular pantheon), notwithstanding that they may believe in another deity.
A person who believes that the human mind cannot know whether there is a God or an ultimate cause, or anything beyond material phenomena
The definition of a skeptic is someone inclined to doubt or question rather than just believe matters that are generally accepted.
The definition of a belief is an opinion or something that a person holds to be true.
A person who habitually doubts; chronic skeptic
Find another word for unbeliever. In this page you can discover 21 synonyms, antonyms, idiomatic expressions, and related words for unbeliever, like: nonbeliever, freethinker, atheist, agnostic, skeptic, doubter, belief, disbeliever, infidel, apostate and non-believer.