Meaning of “skeptic” in the English Dictionary

"skeptic" in British English

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skepticnoun [ C ]

mainly US UK usually sceptic uk /ˈskep.tɪk/ us /ˈskep.tɪk/

(Definition of “skeptic” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"skeptic" in American English

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skepticnoun [ C ]

us /ˈskep·tɪk/

a person who doubts the truth or value of an idea or belief

skeptical
adjective us /ˈskep·tɪ·kəl/

They’re very skeptical of his motives.
skepticism
noun [ U ] us /ˈskep·təˌsɪz·əm/

He displays a healthy skepticism toward his own beliefs.

(Definition of “skeptic” from the Cambridge Academic Content Dictionary © Cambridge University Press)