[1] : The Collaborative International Dictionary of English v.0.48

skeptic \skep"tic\, n. gr. skeptiko`s thoughtful, reflective,
   fr. ske`ptesqai to look carefully or about, to view,
   consider: cf. l. scepticus, f. sceptique. see scope.
   written also sceptic.
   1. one who is yet undecided as to what is true; one who is
      looking or inquiring for what is true; an inquirer after
      facts or reasons.
      1913 webster

   2. metaph. a doubter as to whether any fact or truth can be
      certainly known; a universal doubter; a pyrrhonist; hence,
      in modern usage, occasionally, a person who questions
      whether any truth or fact can be established on
      philosophical grounds; sometimes, a critical inquirer, in
      opposition to a dogmatist.
      1913 webster

            all this criticism of hume proceeds upon the
            erroneous hypothesis that he was a dogmatist. he was
            a skeptic; that is, he accepted the principles
            asserted by the prevailing dogmatism: and only
            showed that such and such conclusions were, on these
            principles, inevitable.               --sir w.
                                                  hamilton.
      1913 webster

   3. theol. a person who doubts the existence and perfections
      of god, or the truth of revelation; one who disbelieves
      the divine origin of the christian religion.
      1913 webster

            suffer not your faith to be shaken by the
            sophistries of skeptics.              --s. clarke.
      1913 webster

   note: this word and its derivatives are often written with c
         instead of k in the first syllable, -- sceptic,
         sceptical, scepticism, etc. dr. johnson, struck with
         the extraordinary irregularity of giving c its hard
         sound before e, altered the spelling, and his example
         has been followed by most of the lexicographers who
         have succeeded him; yet the prevalent practice among
         english writers and printers is in favor of the other
         mode. in the united states this practice is reversed, a
         large and increasing majority of educated persons
         preferring the orthography which is most in accordance
         with etymology and analogy.
         1913 webster

   syn: infidel; unbeliever; doubter. -- see infidel.
        1913 webster skeptic
see also:
scope sceptic infidel 

[2] : The Collaborative International Dictionary of English v.0.48

skeptic \skep"tic\, skeptical \skep"tical\, a. written also
   sceptic, sceptical.
   1. of or pertaining to a sceptic or skepticism; characterized
      by skepticism; hesitating to admit the certainly of
      doctrines or principles; doubting of everything.
      1913 webster

   2. theol. doubting or denying the truth of revelation, or
      the sacred scriptures.
      1913 webster

            the skeptical system subverts the whole foundation
            of morals.                            --r. hall.
      1913 webster -- skep"tacally, adv. --
      skep"ticalness, n.
      1913 webster
see also:
skep"tacally skep"ticalness 

[3] : WordNet (r) 2.0

skeptic
     n : someone who habitually doubts accepted beliefs syn: sceptic,
          doubter
see also:
sceptic doubter 

Skeptic >> S Words
Skeptic, definition of term: Skeptic
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