1. Vigilant
   "must remain on your guard in such a situation"
   - on guard, on one's guard, upon one's guard

See also: wary

• E. H. Weber
• E. L. Doctorow
• E. O. Lawrence
• E. O. Wilson
• E. T. A. Hoffmann
• E. T. S. Walton
• E. W. Morley
• e.g.
• Ea
• each
• each other
• each week
• each year
• Eacles
• Eacles imperialis
• Eadweard Muybridge
• Eadwig
• eager
• eager beaver
• eagerly
• eagerness
• eagle
• eagle owl
• eagle ray
• Eagle Scout