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incredulous

in·cred·u·lous

incredulous

 
pronunciation:
In kre j ls
features:
Word Explorer, Word Parts
part of speech: adjective
definition 1: in a state of skepticism, wonder, or disbelief.
He was incredulous when he heard that he had won the lottery.
antonyms:
credulous
definition 2: demonstrating such a state.
an incredulous expression
antonyms:
credulous
derivations: incredulously (adv.), incredulousness (n.)
Word Explorer
See
  belief
Word Parts
The word incredulous contains the following parts:
in-2 Latin prefix that means not, without
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The prefix in-2 occurs in Latin loanwords and attaches to Latinate bases. The bases of most words prefixed with in-2 are independent adjectives (inadvertent , incognizant ), although the base adjective may no longer be in widespread use (as with incessant ). Exceptions include iniquitous and indignant . -in2 has multiple forms, as the 'n' sound in in-2 assimilates to the initial sound of the base to which it is attached. See the assimilated forms ig-, il-2, im-2, and ir-2.
cred, credit Latin root that means believe
-ulous Latin adjective-forming suffix that means tending to, characterized by