American English

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


stack up

 phrasal verb
phrasal verb
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Phrasal Verbs
  1. 1to keep increasing in quantity until there is a large pile, a long line, etc. Cars quickly stacked up behind the bus. During the strike, refuse has been stacking up in the streets.
  2. 2(used especially in questions or in negatives) to compare with someone or something else; to be as good as someone or something else synonym measure up (to something/somebody) Let's try him in the job and see how he stacks up. stack up against somebody/something A mobile home simply doesn't stack up against a traditional house.
  3. 3(used especially in negatives) to seem reasonable; to make sense That can't be right. It just doesn't stack up.
See the Oxford Advanced Learner's Dictionary entry: stack up