Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “knuckle down”

knuckle down

informal
verb uk phrasal verb with knuckle   /ˈnʌk.l̩/ us  
to start working or studying hard: You're going to have to really knuckle down (to your work) if you want to pass your exams.Work, working and the workplaceWorking hours and periods of work
(Definition of knuckle down from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of knuckle down?
Browse related topics

You are looking at an entry to do with Work, working and the workplace, but you might be interested in these topics from the Working topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “knuckle down” in other dictionaries

Word of the Day

flair

natural ability to do something well

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