credible vs incredible

credible and incredible both are adjectives.

Word	Noun	Adjective	Verb	Adverb
credible	No	Yes	No	No
incredible	No	Yes	No	No

credible (adjective)	incredible (adjective)
capable of being believed	beyond belief or understanding
appearing to merit belief or acceptance
(a common but incorrect usage where `credulous' would be appropriate) credulous