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qui vive

NOUN

in phrase on the qui vive

On the alert or lookout.

Origin

Late 16th century: from French, literally ‘(long) live who?’, i.e. ‘on whose side are you?’, used as a sentry's challenge.

Viva1

NOUN

short for viva voce

VERB

[WITH OBJECT]British 

Subject (someone) to an oral examination.

viva2

EXCLAMATION

Long live! (used to express acclaim or support for a specified person or thing)

NOUN

A cry of ‘viva’ as a salute or cheer.