flabbergast

From Wiktionary

Pronunciation[change]

Verb[change]

Plain form
flabbergast

Third-person singular
flabbergasts

Past tense
flabbergasted

Past participle
flabbergasted

Present participle
flabbergasting

  1. (transitive) If you are flabbergasted, you are amazed in a ludicrous manner.
    He was flabbergasted to find that his work had been done for him before he began.
    The oddity of the situation was so flabbergasting I couldn’t react in time for anyone to see it.