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to knuckle down
[phrase form: knuckle]
01
to begin to work or study hard and focus seriously on a task or goal
Grammatical Information
Composition
phrasal
action verb
regular
inseparable
particle
down
base verb
knuckle
present tense
knuckle down
3rd person singular
knuckles down
present participle
knuckling down
past simple
knuckled down
past participle
knuckled down
Examples
I need to knuckle down and study for these exams.
