challenging is on the Academic Word List.

Pronunciation

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  • IPA (key): /ˈtʃæləndʒɪŋ/ or /ˈtʃælɪndʒɪŋ/
  • (file)

Adjective

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Positive
challenging

Comparative
more challenging

Superlative
most challenging

  1. If something is challenging, it is not easy but it can be done.
    For a longer, wilder and more challenging route, you can explore the beautiful mountains around Goatfell.
    All actors will agree that Hamlet is a very challenging role.

Plain form
challenge

Third-person singular
challenges

Past tense
challenged

Past participle
challenged

Present participle
challenging

  1. The present participle of challenge.