NONPLUS


Meaning of NONPLUS in English

[ nɒn'plʌs ]

■ verb ( ~ses , ~sing , ~sed )

1》 surprise and confuse; flummox.

2》 [as adjective ~sed ] N. Amer. informal unperturbed.

■ noun a state of being ~sed.

Origin

C16: from L. non plus 'not more'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.