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

• firebox
• firebrand
• firebrat
• firebreak
• firebrick
• firebug
• fireclay
• firecracker
• fired
• firedamp
• firedog
• firedrake
• firefight
• firefighter
• firefighting
• firefly
• fireguard
• firehouse
• fireless
• firelight
• firelighter
• firelit
• firelock
• fireman
• fireman's ax