keep cave
everwatchful
ward
keep an eye open
stand guard
keep a lookout
keep one's stick on the ice
upon one's guard
vigilantness
on one's guard
on guard
ever-watchful
on your guard
watch and ward
Argus-eyed
vigilantly
supervigilant
on watch
weather eye
outwatch
watchfulness
vigilance
open-eyed
hypervigilantly
safeguard
watch
watch over
hypervigilant
protectiveness
cover
wakeful
palladium
heads-up
protectionary
safekeep
police
patrol
protectedly
keep one's guard up
refuge
protectingly
hypovigilant
jealousy
aware
safe
tutelary
excubant
custodial
waker
tutelar