1. Not prepared or vigilant
   "found him off his guard"
   - napping, off-guard, off guard, off one's guard, off her guard, off your guard

See also: unready

• water vapor
• water vapour
• water vascular system
• water violet
• water vole
• water waggon
• water wagon
• water wings
• water witch
• water yam
• water-base paint
• water-cooled
• water-cooled reactor
• water-insoluble
• water-lily family
• water-loving
• water-milfoil family
• water-plantain family
• water-rate
• water-repellent
• water-resistant
• water-shield
• water-shield family
• water-skiing
• water-soluble