Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “gruelling”

gruelling

adjective (US usually grueling)     /ˈɡruː.ə.lɪŋ/
extremely tiring and difficult, and demanding great effort and determination: Junior doctors often have to work a gruelling 100-hour week. He eventually won the match after five gruelling sets.Complicated and difficult to doDifficult to understand gruellingly (US gruelingly)     /-li/ adverb
(Definition of gruelling adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of gruelling

Browse related topics

You are looking at an entry to do with Complicated and difficult to do, but you might be interested in these topics from the Easy and difficult topic area:

Definitions of “gruelling” in other dictionaries

Word of the Day

handout

a document given to students or reporters which contains information about a particular subject

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More