ANSWER(s): convincible, believable, taken for granted, plausible
-Credible is defined as persuading or able to be believed, but also can be stated when a person is easily believed when talking about a subject because of his/her position or profession
EXAMPLE: "The person is [credible] when stating this medicine will cure disease because he/she is a doctor."
-If you replace credible with any of the synonyms given, it still makes sense.
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