nonplussed

And should I not celebrate this little resurgence of the Dictionary with this gem, a lovely inverted action, unadded adjective to indicate an addled state, to describe ones feeling upon seeing the unseeable, hearing the unhearable, experiencing the impossible. Stopped by embarrassment, a lovely thing in itself.
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Nonplussed
Nonplus Non"plus`, v. t. [imp. & p. p. Nonplusedor
Nonplussed; p. pr. & vb. n. Nonplusing or Nonplussing.]
To puzzle; to confound; to perplex; to cause to stop by
embarrassment.
[1913 Webster]

He has been nonplused by Mr. Dry's desiring him to tell
what it was that he endeavored to prove. --Spectator.
[1913 Webster]

-- From The Collaborative International Dictionary of English v.0.48

nonplus
v : be a mystery or bewildering to; "This beats me!"; "Got me--I
don't know the answer!"; "a vexing problem"; "This
question really stuck me" [syn: perplex, vex, stick,
get, puzzle, mystify, baffle, beat, pose, bewilder,
flummox, stupefy, gravel, amaze, dumbfound]
[also: nonplussing, nonplusses, nonplussed]

-- From WordNet (r) 2.0

nonplussed
adj : filled with bewilderment; "at a loss to understand those
remarks"; "puzzled that she left without saying
goodbye" [syn: at a loss(p), puzzled]

-- From WordNet (r) 2.0

nonplussed
See nonplus

-- From WordNet (r) 2.0

26 Moby Thesaurus words for "nonplussed":
addled, at a loss, at a nonplus, at a stand, at a standstill,
at an impasse, baffled, bamboozled, beat, bewildered, buffaloed,
confounded, dazed, floored, fuddled, in a dilemma, in suspense,
licked, muddled, mystified, on tenterhooks, perplexed, puzzled,
stuck, stumped, thrown



-- From Moby Thesaurus II by Grady Ward, 1.0