Synonyms of nonplussed in English:

nonplussed


See US English definition of nonplussed

See UK English definition of nonplussed

verb

1‘young Lewis seemed remarkably nonplussed by the whole affair’

SYNONYMS
confused, bewildered, bemused, puzzled, perplexed, baffled, stumped, mystified, stupefied, muddled, befuddled, fuddled, dumbfounded, at sea, at a loss, at sixes and sevens, thrown, thrown off balance, taken aback, disoriented, disconcerted, discomposed, troubled, discomfited, unnerved, shaken, shaken up, dazed, stunned, surprised, astonished, astounded
informal flummoxed, bamboozled, discombobulated, clueless, fazed, floored, stumped, foxed
Canadian, Australian, New Zealand informal bushed
archaic wildered, mazed, distracted

2

SYNONYMS
unperturbed, untroubled, undisturbed, unworried, unconcerned, unmoved, unflustered, unruffled, unshaken, undismayed
calm, composed, cool, collected, controlled, unemotional, serene, tranquil, self-possessed, self-assured, poised, level-headed, at ease, placid, cool, calm, and collected, unflappable, unflinching, as cool as a cucumber
unfazed, laid-back, together