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Use "gobsmacked" in a sentence
"To say I was gobsmacked is something of an understatement."
"I always liked the British slang "gobsmacked" -- it sounds a little violent, but sometimes you do just feel smacked by whatever's happening around you, you know?"
"Much to my surprise - I wrote at the time I was "gobsmacked" - he had indeed left his wife whom Casey believes had no knowledge of the affair and a more confident Casey was moving to his city to be with him."