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

See also: unready

• red angel's trumpet
• Red Army Faction
• red ash
• red baneberry
• red bat
• red bay
• red bearberry
• red beech
• red biddy
• red birch
• red bird's eye
• red blood cell
• red bone marrow
• red Bordeaux
• red brass
• Red Brigades
• red bryony
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• red cabbage
• red campion
• red card
• red carpet
• red cedar
• red cent
• Red China