sledgehammer - definition and synonyms

noun [countable] 

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/ˈsledʒˌhæmə(r)/
singularsledgehammer
pluralsledgehammers
  1. 1
    a long heavy hammer that you swing with both hands
  2. 2
    a way of doing something that uses a lot more power or force than seems necessary

    He took rather a sledgehammer approach to the whole thing.