1. Startle with amazement or fear 
2. Hesitate when confronted with a problem, or when in doubt or fear 
3. Overcome with amazement
   "This boggles the mind!"
   - flabbergast, bowl over

Derived forms: boggled, boggles, boggling

Type of: balk, baulk [Brit], hesitate, jump, start, startle, surprise, waffle, waver

Encyclopedia: Boggle

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