1. Vigilant
   "on guard against con artists"
   - on one's guard, upon one's guard, on your guard

See also: wary

• edible corn
• edible fat
• edible fruit
• edible mussel
• edible nut
• edible sea urchin
• edible seed
• edible snail
• edible-pod pea
• edible-podded pea
• edibleness
• edict
• edictal
• edification
• edifice
• edified
• edifier
• edify
• edifying
• Edinburgh
• Edirne
• Edison
• edit
• edit out
• editable