The word 'incredulous' originates from 'in-' meaning 'not' and 'credulous' meaning 'believing,' collectively conveying the idea of 'not believing or unwilling to believe.'
Incredulous derives its meaning from its parts through its roots 'in-' meaning 'not' and 'credulous' meaning 'believing.' Put together, incredulous conveys the sense of 'not believing or unwilling to believe.' Breaking down the word into its components helps to understand its overall meaning.
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