/ ˈbɒgl; NAmE ˈbɔːgl/ verb
[ v ] boggle (at sth) ( informal ) to be slow to do or accept sth because you are surprised or shocked by it :
Even I boggle at the idea of spending so much money.
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IDIOMS
- sth boggles the mind
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WORD ORIGIN
late 16th cent.: probably of dialect origin and related to bogle, a phantom or goblin and bogey thing that causes fear .