challenging

IPA/ˈtʃælɪndʒɪŋ/
KK[tʃˈæləndʒɪŋ]IPA/ˈtʃælɪndʒɪŋ/

challenging — adjective

  • challengingpositive
  • more challengingcomparative
  • most challengingsuperlative

1. Something that is challenging pushes you to use more effort, skill, or patience

1.adjectiveB1
Definition

Something that is challenging pushes you to use more effort, skill, or patience than usual in order to deal with it successfully.

Example

Aiko found the maths test challenging because it covered topics she had never studied before.

challenging + because-clause for reason

Running a marathon is one of the most challenging physical activities a person can attempt.

superlative: one of the most challenging

Common collocations
  • challenging task
  • challenging problem
  • challenging experience
  • challenging situation
  • challenging exam
  • challenging work
  • challenging environment
Synonyms
  • demanding

    stronger focus on the effort or time required; can describe both tasks and people

  • tough

    informal; similar meaning but does not emphasize growth or testing of ability

  • difficult

    most common and general; neutral — does not imply a positive or growth-oriented challenge

  • taxing

    suggests mental or physical strain, often exhausting rather than stimulating

Antonyms
  • easy

    requiring little effort or skill

  • simple

    not complicated; straightforward

  • undemanding

    not requiring much effort or attention

Grammar Patterns

be challenging

find + noun + challenging

more challenging than

Usage Note

This adjective is gradable, so you can use 'very', 'more', and 'most' with it. It usually describes tasks, situations, or experiences — not people. To describe a person who tests your abilities, use 'demanding' instead.

Common Mistakes

I find my boss very challenging because he asks hard questions.
I find my boss very demanding because he asks hard questions.
'Challenging' describes tasks or experiences, not people, in this neutral sense.

Word family

Synonym discussion

Sense: adjective/1

All four words describe something that is not easy, but they differ in tone and scope. Challenging focuses on a task that tests your ability and often carries a positive or growth-oriented feeling — you feel stretched but capable. Demanding is stronger, emphasising the high level of effort, time, or skill needed; unlike 'challenging', it can describe people (a demanding boss). Tough is informal and neutral — it can mean hard without the growth nuance ('a tough exam' may just be unpleasant). Difficult is the most general and widely used word, but it lacks the idea of testing or growth entirely. If you want to say a project helped you learn and improve, use 'challenging'. If you just want to say it was hard, use 'difficult' or 'tough'.

challenging ↗demanding ↗tough ↗difficult ↗

Common collocations

Nouns

Adverbs

  • very challenging
  • quite challenging
  • particularly challenging
  • increasingly challenging

Phrases

  • find something challenging
  • prove challenging
  • remain challenging

Prepositions

  • challenging for
  • challenging to

Etymology

LatinFrenchEnglish

The adjective 'challenging' comes from the noun 'challenge', which entered English in the 13th century from Old French 'chalenge' meaning an accusation, claim, or dispute. The French word traces back to Latin 'calumnia' meaning trickery or false accusation. Over time, 'challenge' shifted from a legal term for a disputed claim to a general word for any invitation to compete or prove oneself. By the 19th century, English speakers began using 'challenging' as an adjective to describe tasks or situations that put a person's abilities to the test.