Meaning

1 senses
  1. In a state of heightened vigilance, especially prior to battle.

Origin

Partial calque of French sur le qui-vive (“in a state of heightened vigilance”).

Partial calque of French sur le qui-vive (“in a state of heightened vigilance”).

Wiktionary, CC BY-SA 4.0 · source

See also

neighbours in the dictionary
on the qui vive — meaning, examples, forms, synonyms | Krumeto