on the qui vive

English Thesaurus

1. lively attentiveness (noun.attribute)

hypernym	:	attentiveness,
definition	:	the trait of being observant and paying attention (noun.attribute)

derivation	:	alert, watchful,
definition	:	engaged in or accustomed to close observation (adj.all)

derivation	:	quick-sighted, sharp-eyed, sharp-sighted,
definition	:	keenly perceptive or alert (adj.all)

derivation	:	alert, watchful,
definition	:	engaged in or accustomed to close observation (adj.all)

derivation	:	quick-sighted, sharp-eyed, sharp-sighted,
definition	:	keenly perceptive or alert (adj.all)