Attested since 1430. From Middle English incredulite, from Old French incredulité, from Late Latin incredulitas, from Latin incredulus + -itas ("-ity"), equivalent to incredulous + -ity.

• IPA: /ˌɪnkɹɪˈdjuːlɪti/

incredulity (uncountable)

1. Unwillingness or inability to believe; doubt about the truth or verisimilitude of something; disbelief.
   • 1916, Edgar Rice Burroughs, chapter 24, in Tarzan and the Jewels of Opar:

     Wide went her eyes in wonder and incredulity, as she beheld this seeming apparition risen from the dead.

   • 1963, Margery Allingham, chapter 8, in The China Governess: A Mystery, London: Chatto & Windus, →OCLC ↗:

     It was a casual sneer, obviously one of a long line. There was hatred behind it, but of a quiet, chronic type, nothing new or unduly virulent, and he was taken aback by the flicker of amazed incredulity that passed over the younger man's ravaged face.

2. (rare) Religious disbelief; lack of faith.

• incredulousness

• credulity

• incredibility
• incredulous

• French: incrédulité
• German: Ungläubigkeit
• Portuguese: incredulidade
• Russian: недове́рчивость
• Spanish: incredulidad

• French: incrédulité
• German: Ungläubigkeit
• Portuguese: incredulidade
• Russian: неве́рие
• Spanish: incredulidad