FLABBERGASTED
dumbfounded, dumfounded, flabbergasted, stupefied, thunderstruck, dumbstruck, dumbstricken
(adjective) as if struck dumb with astonishment and surprise; “a circle of policemen stood dumbfounded by her denial of having seen the accident”; “the flabbergasted aldermen were speechless”; “was thunderstruck by the news of his promotion”
Source: WordNet® 3.1
Etymology
Adjective
flabbergasted (comparative more flabbergasted, superlative most flabbergasted)
Appalled, annoyed, exhausted or disgusted.
(euphemistic, rare) Damned.
Synonyms
See astonished
Verb
flabbergasted
simple past tense and past participle of flabbergast
Anagrams
• gabberflasted
Source: Wiktionary
FLABBERGAST
Flab"ber*gast, v. t. Etym: [Cf. Flap, and Aghast.]
Definition: To astonish; to strike with wonder, esp. by extraordinary
statements. [Jocular] Beaconsfield.
Source: Webster’s Unabridged Dictionary 1913 Edition