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

• Fido
• fiducial
• fiduciary
• fiduciary duty
• fiduciary relation
• fie
• Fiedler
• fief
• fiefdom
• field
• field artillery
• field balm
• mislaid
• mislay
• mislead
• misleader
• misleading
• misleadingly
• mislike
• mismanage
• mismanagement
• mismarry
• mismatch
• mismatched
• mismate