be vigilant
Keep eyes open
To be vigilant is to stay watchful and alert, especially for potential danger or problems.
The phrase emphasizes sustained attention rather than a single glance: Officials urged residents to be vigilant for signs of flooding.
It often appears in warnings or advice about ongoing threats: Be vigilant about checking your bank statements.
- watchfulCarefully attentive, observant
- stay alertMaintain active awareness
- alertWarning or watchfulness
- waryGuardedly alert
- cautiousCareful to avoid risk
on the lookout · attentive · guarded · observant · keep watch · lookout · sentinel · security detail · patrol · scanning · on guard · hawk-eyed · stay frosty · sleepless · night watch · careful · suspicious · aware
be vigilantlet one's guard down
Cease being defensive
drop one's guard · rest on one's laurels · throw caution to the wind · take it easy
being, been, vigilant, vigilance, vigilantly, vigil, vigils, vigilante, vigilantes