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English definition of “muster sth up”

muster sth up

verb [I or T] uk phrasal verb with muster   /ˈmʌs.tər/ us    /-tɚ/
If you muster up a feeling of courage or energy, you try hard to find that quality in yourself because you need it in order to do something: [+ to infinitive] She finally mustered up the courage to ask him for more money.Brave and courageousPreparing
(Definition of muster sth up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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