51 entries under expression topic. ×

1
looking to(keen, anxious, alert, careful)
1
not missing a trick(adjective, idiom, alert, careful)
1
of a mind(idiom, set, ready, qualified)
1
on alert(keen, anxious, alert, careful)
1
on the defensive
1
on toes(adjective, keen, anxious, alert)
1
overlooking no possibility
1
psyched up(sharp, bright, lively, qualified)
1
put up(adjective, set, ready, qualified)
1
see after(adjective, alert, careful, cautious)
1
see to(adjective, alert, careful, cautious)
1
slow to act
1
switched on(sharp, bright, lively, alert)
1
up and about(adjective, idiom, conscious, wide-awake)
1
up on(adjective, set, ready, qualified)
1
waiting on(keen, anxious, alert, careful)
1
with eyes peeled(adjective, idiom, keen, anxious)
1
with it(sharp, bright, lively, alert)
1
with open eyes
1
with weather eye open(idiom, keen, alert, careful)
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APASmart Define. (2015). on guard thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/on_guard/thesaurus/synonyms
ChicagoSmart Define. 2015. "on guard thesaurus" https://smartdefine.org/on_guard/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, on guard thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/on_guard/thesaurus/synonyms>.
MLASmart Define. "on guard thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/on_guard/thesaurus/synonyms>