1. Not prepared or vigilant
   - napping, off-guard, off guard, off his guard, off her guard, off your guard

See also: unready

• protractedly
• protractible
• protractile
• protraction
• protractive
• protractor
• protriptyline
• Protropin
• protrude
• protruding
• protrusible
• protrusile
• protrusion
• protrusive
• protuberance
• protuberant
• protuberate
• Protura
• proturan
• protégé
• protégée
• proud
• proud flesh
• proud of
• Proudhon