English Reference
adjective

skeptical

adj.
US /ˈskɛptəkəɫ/ skep·ti·cal UK spelling sceptical

  1. 01 B2 Upper Intermediate American English

    doubting that something is true or useful.

    inclined to doubt or question claims; expressing a lack of belief in the validity of a statement or theory.

    Simple

    Many people are skeptical about the new law and don't think it will work.

    In context

    The board remained skeptical of the CEO's ambitious projections, demanding more concrete data before approving the expansion.

    Usage

    Commonly followed by the prepositions 'of' or 'about'.

    Pitfall
    I am skeptical for his story. I am skeptical of his story.

    Use the preposition 'of' or 'about' after skeptical to show what you doubt.

  2. 02 C1 Advanced American EnglishAcademic

    relating to the philosophical idea that we cannot know anything for certain.

    relating to the philosophical school of thought that questions the possibility of absolute knowledge or certainty.

    Simple

    The professor discussed the skeptical tradition in ancient Greek philosophy.

    In context

    His skeptical approach to epistemology suggests that human sensory perception is inherently unreliable for determining objective truth.

But while Huckabee posted a video of Israeli forces arriving to deal with the settlers to show that action is being taken, Palestinians remain sceptical.

Al Jazeera· 14 Aug 2026

But he is sceptical about how much Argos can grow in such a "tough retail market".

BBC News· 6 Aug 2026

From Latin scepticus + -al; attested earlier than skeptic. By surface analysis, skeptic + -al.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated