American English

Definition of store up phrasal verb from the Oxford Advanced American Dictionary

 

store up

 phrasal verb
phrasal verb
 
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Phrasal Verbs

store somethingup

 
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to not express strong feelings or deal with problems when you have them, especially when this causes problems later She had stored up all her anger and eventually snapped. By ignoring your feelings you are only storing up trouble for yourself.
See the Oxford Advanced Learner's Dictionary entry: store up