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English definition of “louse (sth) up”

louse (sth) up

mainly US informal
verb uk phrasal verb with louse   /laʊs/ us  
to spoil something or cause it to fail: This is a great opportunity, so don't louse it up.Damaging and spoilingDestroying and demolishing
(Definition of louse (sth) up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “louse (sth) up”

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a large usually drinking cup, usually made of metal, with sloping sides, a handle, and sometimes a lid, mainly used for drinking beer

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