nonplussed
At a loss
Nonplussed is an adjective to characterize a state in which people are too surprised or confused to know how to react: His flirtation left her nonplussed.
The word is based on a little-used verb, nonplus, which means utterly surprise or confuse.
Recent usage shows that people use nonplussed as a synonym for unperturbed, the word’s antonym.
Thoroughly confused, uncertain
- baffledUtterly unable to understand
- puzzledConfused by something unclear
- confoundedThoroughly puzzled or frustrated
- mystifiedUtterly unable to understand
flummoxed · stumped · befuddled · bemused · dumbfounded · discombobulated · at a loss · clueless
Nervously upset and confused
- unsettledNot yet resolved
- discomfitedUnsettled and embarrassed
- rattledDisturbed and unsettled
- shakenDisturbed or agitated
perturbed · disturbed · troubled · discomposed · unnerved · disquieted · uncomfortable · dismayed
Shocked into speechlessness
- dumbstruckRendered speechless by shock
- flabbergastedOverwhelmed with amazement
- gobsmackedExtremely astonished
- thunderstruckExtremely shocked or amazed
stupefied · astounded · amazed · shocked · staggered · incredulous · agog · awestruck
Not bothered or worried
- unbotheredNot disturbed or concerned
- composedCalm and self-possessed
- calmFree from agitation
- unruffledEmotionally undisturbed, placid
imperturbable · coolheaded · collected · undaunted · steady · poised · nonchalant · unmoved
perplexed
Thoroughly confused, uncertain
- baffledUtterly unable to understand
- puzzledConfused by something unclear
- confoundedThoroughly puzzled or frustrated
mystified · flummoxed · stumped · befuddled · bemused · dumbfounded · discombobulated · at a loss · clueless · disoriented
flustered
Nervously upset and confused
- unsettledNot yet resolved
- discomfitedUnsettled and embarrassed
- rattledDisturbed and unsettled
shaken · perturbed · disturbed · troubled · discomposed · unnerved · disquieted · uncomfortable · dismayed · thrown off
stunned
Shocked into speechlessness
- dumbstruckRendered speechless by shock
- flabbergastedOverwhelmed with amazement
- gobsmackedExtremely astonished
thunderstruck · stupefied · astounded · amazed · shocked · staggered · incredulous · agog · awestruck · taken aback
unperturbed
Not bothered or worried
- unbotheredNot disturbed or concerned
- composedCalm and self-possessed
- calmFree from agitation
unruffled · imperturbable · coolheaded · collected · undaunted · steady · poised · nonchalant · unmoved · indifferent
nonplussedcomposed
Calm and self-possessed
unperturbed · unfazed · collected · poised · unruffled
nonplussedcomposed
Calm and self-possessed
unflappable · unfazed · calm · imperturbable · unbothered
plus, surplus, plural, plurality, pluralism, nonplus, pluperfect, nonplused, nonpluses