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nonplussed

1 ENTRIES FOUND:
nonplussed adjective
also US nonplused /ˌnɑːnˈplʌst/
nonplussed
adjective
also US nonplused /ˌnɑːnˈplʌst/
Britannica Dictionary definition of NONPLUSSED
not used before a noun [more nonplussed; most nonplussed] formal
: so surprised or confused by something that you do not know what to say, think, or do : perplexed