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

• Joint Chiefs
• Joint Chiefs of Staff
• Joint Direct Attack Munition
• joint fir
• joint hinge
• joint probability
• joint resolution
• joint return
• joint snake
• joint venture
• joint-stock company
• jointed
• jointed charlock
• jointed rush
• jointer
• jointer plane
• jointing plane
• jointly
• jointress
• jointure
• jointworm
• joist
• jojoba
• joke
• joker