Beware
Definition 1 of 2
Pro Tip 1/3
Immediate Danger
Use 'beware' when warning someone of an immediate, specific danger. Beware the icy steps outside.
Pro Tip 2/3
Strong Warning
'Beware' gives a sense of urgency to your warning. Beware the broken glass on the floor.
Pro Tip 3/3
Personal Safety
Use it when someone's safety might be at risk. Beware of pickpockets in crowded areas.