Definition of "gobsmacking" [gobsmacking]

• Causing one to be gobsmacked; astounding, flabbergasting. (adjective)

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• "I started noticing this last week, but the level of bald-faced mendacity indulged in by defenders of the recent FISA amendment is sort of gobsmacking, which is saying quite a bit given how little I expect of GOP dead-enders at this point."
• "So "We want to see Jesus lifted high" was one of these "gobsmacking" songs for me."
• "Anthony Geffen, the CEO and executive producer of Atlantic Productions who has worked closely with Attenborough for 18 months making First Life, says Sir David's passion for fossils manifests itself in 'gobsmacking' knowledge."