1. Not prepared or vigilant
   "caught in an off-guard moment"
   - napping, off guard, off one's guard, off his guard, off her guard, off your guard

See also: unready

• milk thistle
• milk tooth
• milk whey
• milk-sick
• milk-vetch
• milk-white
• milkcap
• milker
• milkily
• milkiness
• milking machine
• milking shorthorn
• milking stool
• milkless
• milklike
• milkmaid
• milkman
• milkshake
• milksop
• milkwagon
• milkweed
• milkweed butterfly
• milkweed family
• milkwort
• milkwort family