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Definition of atheist

atheist

/ˈeɪ.θi.ɪst/
a · the · ist
Adverb:atheistically
•
Plural:atheists
•
Adjective:atheistic
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atheist Lexical Profile

atheist Game Scores & Validity

• noun

1

A person who disbelieves or lacks belief in the existence of God or any deities.

Example

"As an outspoken atheist, the philosopher argued that morality does not require a divine foundation."

Synonyms
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Antonyms
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• adjective

1

Relating to or characterized by atheism or the rejection of belief in the existence of deities.

Example

"The university student joined an atheist organization that promoted secularism and scientific inquiry."

Synonyms
View all synonyms for atheist
Antonyms
View all antonyms for atheist

Word Nuance & Usage

An 'atheist' lacks belief in or rejects the existence of any deity, whereas an 'agnostic' holds that the existence of a deity is unknown or inherently unknowable.

• Nearby Words

athabasca falls
athabascan
atheism
atheist
atheistic
athenian
athens

Word Origin & Etymology

Borrowed in the mid-16th century from Middle French athéiste, derived from Ancient Greek atheos ('without god'), combining the privative prefix a- ('without') and theos ('god').

Cite this Entry

Wordmom. (2026). Definition of Atheist. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/atheist
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