Incredulous – Unwilling to believe something

To remember the definition of the word incredulous, use the following mnemonic:

In credit, us? (incredulous) We don't believe you.

Examples of incredulous in a sentence

Miriam’s envious friends were incredulous about her engagement to a wealthy doctor.

The bank teller gave Kurt an incredulous look when he deposited a real cheque for twenty million pounds.

I could tell by my husband’s incredulous smile he had serious doubts about my excuse for coming home late.