Word Type

Verb

Noun

The word "flabbergast" can be used as verb and noun.

Word Relationships

Derived Terms

flabbergastation flabbergaster flabbergasting flabbergastingly flabbergastment flabergastation

Derived From

flabrigast

Etymologically Related To

aghast flabby flabrigast flabrigastit flap

Broader Terms (Hypernyms)

surprise

Manner Of

surprise

Related Terms

amaze awkward bewilderment confound confusion ludicrous overwhelm stun

Synonym Network

amaze astonish astonishment astony astound awe baffle bewilder bowl over dazzle dork dumbfound flabagast floor nonplus stagger startle stun stupefy take aback unnerve

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.