spare key
Hidden lockout insurance
A spare key is a duplicate key kept as a backup in case the original is lost, forgotten, or locked inside.
People commonly hide spare keys near their homes or leave them with trusted neighbors: We keep a spare key under the flowerpot.
The term extends to any backup key for cars, offices, or storage units.
- duplicateExact replica of original
- lockoutEmployer-imposed work stoppage
- hiddenKept out of sight
- secret spotConcealed personal location
- emergencySerious sudden danger
copy · doormat · neighbor · locksmith · backup · just in case · keychain · jingle · unlock · deadbolt · entrance · welcome mat · safekeeping · metal · cut · brass · forgotten · drawer
- house sittingmail collection, security checks, house rules, daily visits, overnight stays
- keyskeychain, keyring, keyhole, keyway, keycard
- spare partsbackup battery
- Spare Thingsbackup, reserve, surplus, extra, duplicate
- Access Methodspassword, PIN, fingerprint, swiping card, biometrics
- keyless entrysmart lock, keypad lock, fingerprint lock, biometric lock, smart locks