Appalled, annoyed, exhausted or disgusted. / (euphemistic, rare) Damned.

simple past tense and past participle of flabbergast

(transitive) To overwhelm with bewilderment; to amaze, confound, or stun, especially in a ludicrous manner.

(countable) An awkward person. / (uncountable) Overwhelming confusion, shock, or surprise.

plural of flabbergast

Third-person singular simple present indicative form of flabbergast

Overwhelming in a bewildering way; amazing, confounding, stunning, especially in a ludicrous manner.

present participle of flabbergast

A person, thing, fact or event that is flabbergasting, or that causes extreme shock. / A state of surprise or fear.

(archaic) To perplex or amaze; to shock or frighten