beware
verb
[ bɪˈwɛː ]
• be cautious and alert to risks or dangers.
• "shoppers were warned to beware of cut-price fakes"
Similar:
be on your guard,
watch out,
look out,
mind out,
be wary,
be careful,
be cautious,
be on the lookout,
be on the alert,
keep your eyes open,
keep a sharp lookout,
be on the qui vive,
take care,
take heed,
have a care,
take it slowly,
look where you're going,
tread carefully,
proceed with caution,
watch your step,
keep an eye out,
keep your eyes peeled/skinned,
look before you leap,
think twice,
cave,
fore,
ware,
Origin:
Middle English: from the phrase be ware (see be-, ware2).