Definition of flabbergast in US English:



[with object]usually as adjective flabbergasted
  • Surprise (someone) greatly; astonish.

    ‘this news has left me totally flabbergasted’
    • ‘Well, I'd just like to say that I'm completely flabbergasted and astounded.’
    • ‘He was flabbergasted at the total complexity of the question.’
    • ‘I was too flabbergasted to say anything, and later I felt guilty about that.’
    • ‘I am frankly flabbergasted that my complaints so far have proved so ineffectual.’
    • ‘When she told me just a few weeks before that she was going to leave, I was flabbergasted and heartbroken.’
    • ‘I was flabbergasted afterwards to hear that they do eight shows a week.’
    • ‘Today Ms Morris said she was flabbergasted by the award.’
    • ‘A shopkeeper was flabbergasted when he opened his mail to find an apology from a shoplifter, with a cheque for £75.’
    • ‘When I found out that I'd got the part I was absolutely flabbergasted.’
    • ‘I know there's a million puns to be had here, but I'm too flabbergasted to think of anything good.’
    • ‘When they arrived she said she was flabbergasted at reading the cover page on them.’
    • ‘I was flabbergasted to learn how much of our money is being wasted in this way.’
    • ‘After a long wait, we're flabbergasted to be announced winners.’
    • ‘Mrs Lewis said she was flabbergasted at some of what she said.’
    • ‘And she is flabbergasted the police have said they cannot act against the owner because the dogs are not registered as dangerous.’
    • ‘Brian was flabbergasted, but not really surprised, not on a subconscious level.’
    • ‘I thought at first it must be a joke but apparently it's true and I am absolutely flabbergasted.’
    • ‘I am flabbergasted at the crassness of things said to, and about, him this past week.’
    • ‘On the other hand, I am utterly flabbergasted that, if the argument is valid, I have not heard about it.’
    • ‘This effect is so obvious to me that I'm flabbergasted at the smart people who can't see it.’
    astonish, astound, amaze, surprise, startle, shock, take aback, take by surprise
    View synonyms


Late 18th century: of unknown origin.