To stun, amaze, or dumbfound:
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flabberghast
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flabergast
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flabbergast
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flaberghast
C
Correct answer
Explanation
The correct spelling is 'flabbergast' (with 'g-a-s-t'). This verb means to stun or astonish someone. Common misspellings include 'flabberghast' or 'flaberghast' which incorrectly use 'gh' instead of 'g'.