incredulous

/ɪnˈkredjələs/ · in-KREJ-uh-lusadjective

Unwilling or unable to believe something; showing strong disbelief.

Use incredulous to express this relationship precisely: unwilling or unable to believe something; showing strong disbelief.

What incredulous Really Means

The word becomes easier to use when its closely related senses are separated and compared.

1

Core quality

Unwilling or unable to believe something; showing strong disbelief.

Example

The audience was incredulous when the result was announced.

2

Attributive or predicative use

Use this adjective before a suitable noun or after a linking verb such as be or seem.

Example

She gave an incredulous laugh at the impossible claim.

3

Analytical distinction

Choose it when this exact descriptive quality matters; a related word may overlap without conveying the same trait.

Example

Reviewers were sceptical but not entirely incredulous.

Use incredulous Naturally

Notice how the surrounding noun or clause reveals the exact shade of meaning.

The audience was incredulous when the result was announced.

She gave an incredulous laugh at the impossible claim.

Reviewers were sceptical but not entirely incredulous.

Precision Matters

Incredulous overlaps with several common words, but each carries a different emphasis.

incredulous

Means unwilling or unable to believe something; showing strong disbelief.

vs.
gullible

Means easily persuaded to believe false claims or easily deceived.

incredulous

Means unwilling or unable to believe something; showing strong disbelief.

vs.
credulous

Means too ready to believe claims and therefore easily deceived.

incredulous

Means unwilling or unable to believe something; showing strong disbelief.

vs.
avid

Means having or showing intense enthusiasm, eagerness, or interest in something.

incredulous

Means unwilling or unable to believe something; showing strong disbelief.

vs.
cynical

Means distrustful of people's motives and inclined to believe that self-interest rather than sincerity guides behaviour.

Test incredulous in Context

They found the claim extremely difficult to believe.

1

When told that the bridge had been built in a single day, historians were ___.

Prepared byFirst Academy
Editorial responsibilityFirst Academy Academic Team
Updated3 August 2026
Selection and reviewRead our methodology