skeptical

also adj.

1. Marked by or given to doubt; questioning: a skeptical attitude; skeptical of political promises.
2. Relating to or characteristic of skeptics or skepticism.

skeptically skep'ti·cal·ly adv.

also sceptical

adjective

1. Experiencing doubt: doubtful, dubious, uncertain, undecided, unsure. Idioms: in doubt. See certain/uncertain.
2. Refusing or reluctant to believe: disbelieving, incredulous, questioning, unbelieving. See belief/unbelief.

adj

Definition: disbelieving, leery
Antonyms: believing, devoted, undoubting

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IN BRIEF: Having or showing doubt. Also: Questioning.

You can go wrong by being too skeptical as readily as by being too trusting. — Robert Heinlein (1907-1988).

Note: click on a word meaning below to see its connections and related words.

The adjective has 2 meanings:

Meaning #1: denying or questioning the tenets of especially a religion
  Synonyms: disbelieving, sceptical, unbelieving

Meaning #2: marked by or given to doubt
  Synonyms: doubting, questioning, sceptical

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