Definition of fall down in US English:

fall down

phrasal verb

  • Be shown to be inadequate or false; fail.

    ‘the deal fell down partly because there were a lot of unanswered questions’
    • ‘Dunblane was where the handgun licensing system fell down catastrophically.’
    • ‘Tuck and everyone at the SQA were confident that would be the case but then fell down on the task.’
    • ‘Where the Times fell down was in the awkward split between its two sections.’
    • ‘It fell down on information governance, MRSA rates and its stroke unit facilities.’
    • ‘Of course, this falls down if surfers fail to double-check the authenticity of a site.’
    fail, be unsuccessful, not succeed, lack success, not make the grade, not come up to expectations, fall short, fall flat, disappoint
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