noun
or scep·tic ˈskeptik, -tēk
( -s )
Etymology: Latin or Greek; Latin scepticus, from Greek skeptikos, from skeptikos thoughtful, reflective, from (assumed) Greek skeptos (verbal of Greek skeptesthai to look, consider) + Greek ikos -ic — more at spy
1.
a. : one who believes the doctrine of skepticism or employs skepticism as a method
b. usually capitalized : a member of one of the ancient schools (as the Sophists) teaching skepticism
2. : one who is disposed to or is in a state of skepticism : a doubting or incredulous person
3. : a person marked by skepticism regarding religion or religious principles