DictionaryskepticPerson who doubts
noun

skeptic

SKEP-tik/ˈskeptɪk/

A person inclined to doubt or question claims.

The skeptic examines the supposedly lucky charm without accepting the seller's claims.

An older man skeptically examines a purportedly lucky charm offered by a woman, raising one eyebrow and holding back rather than accepting her confident presentation.
Etymology

Greek skeptikos meant “inquiring, reflective” and named a philosophical school that doubted the possibility of real knowledge. The name broadened to anyone who doubts claims or suspends judgment.

In context

fusmadison35:42
Henry Drummond is a doubter Henry Drummond is a skeptic but his faith in humankind and his hope for a better future always remains intact
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More examples

  • Even the skeptics find the new study convincing.
  • I'm a skeptic when it comes to miracle cures.
  • The proposal's biggest skeptic asks how we will cover the cost.

Forms

skeptic · skeptics

skeptical adjective — Inclined to question claims or conclusions.

skepticism noun — An attitude of questioning or doubt.

Similar words

doubter
Often questions a particular claim rather than claims in general.
disbeliever
Rejects a claim rather than merely questioning its truth.