Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD ORIGIN

1726, in on the qui vive "on the alert," from French qui voulez-vous qui vive? sentinel's challenge, "whom do you wish to live," literally "(long) live who?" In other words, "whose side are you on?" (The answer might be Vive la France, Vive le roi, etc.).

MORE RELATED WORDS FOR ON THE QUI VIVE

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.