adjective

incredulous

in-KREJ-uh-luhs/ɪnˈkredʒələs/

Unwilling or unable to believe something.

The incredulous adult doubts that the ordinary pebble is a valuable jewel.

An adult raises skeptical eyebrows at a clearly implausible claim depicted by an ordinary pebble presented as a giant jewel, with no spoken text; unwillingness to believe.
Etymology

The prefix reverses the base’s readiness to believe, giving “unbelieving.” Incredulous describes a person’s disbelieving attitude or response, rather than how believable something itself is.

In context

Vivid Audio Library503:47
Hippius emphatically did not remember, and he did not believe the story. Irritation at the mad ravishment of his pillbox rendered him incredulous
The Ordeal of Richard Feverel by George Meredith (Part 1) | Full Classic Victorian Novel Audiobook

More examples

  • He gives me an incredulous stare when I announce my resignation.
  • Even after seeing the results, the coach remains incredulous.
  • “You walked all that way?” she asks in an incredulous voice.

Forms

incredulous

incredulity noun — The state of being unwilling or unable to believe.

incredulously adverb — In a way that shows disbelief.

Similar words

skeptical
Suggests doubt and a desire for evidence before accepting something.
doubtful
Shows uncertainty rather than the stronger disbelief of being incredulous.
disbelieving
Directly describes not believing, without necessarily suggesting surprise.