The Collaborative International Dictionary
Flabbergastation
Flabbergastation \Flab`ber*gas*ta"tion\
(fl[a^]b`b[~e]r*g[a^]s*t[=a]"sh[u^]n), n.
The state of being flabbergasted. [Jocular]
--London Punch.
Wiktionary
flabbergastation
n. (context colloquial English) bewildered shock or surprise; the state or condition of being flabbergasted.{{reference-book