" qui vive "

1: the state of being constantly attentive and responsive to signs of opportunity, activity, or danger;

  * e.g., " ... an army on the qui vive for enemy attack "

•  Synonyms : 

•  alert,

•  alertness,

•  attentiveness,

•  red alert,

•  vigilance,

•  watch,

•  watchfulness

•  Antonyms : 

• (N/A)

1: paying close attention usually for the purpose of anticipating approaching danger or opportunity;

  * e.g., " ... The commanding officer ordered the sentries to remain on the qui vive. "

•  Synonyms : 

•  alert,

•  Argus-eyed,

•  attentive,

•  awake,

•  observant,

•  open-eyed,

•  tenty,

•  vigilant,

•  watchful,

•  wide-awake

•  Antonyms : 

•  asleep