Definition

1. Adjective:
   • Lacking a key or keys: Describes something that does not have or use a physical key for operation.
   • Not requiring a key: Describes a mechanism or system designed to function without the need for a traditional metal key.

Usage Examples

• Adjective:
  • The new apartment building has a keyless entry system for residents.
  • My car is keyless; I just press a button to start the engine.
  • A keyless lock provides convenience but relies on batteries.

Advanced Usage

• "keyless go": A feature, especially in modern vehicles, that allows the engine to be started with the push of a button as long as the electronic key fob is inside the car.
  • His new sedan comes with a keyless go system.
• "keyless entry": A security system, often for a building or vehicle, that is unlocked via a coded keypad, a card, a remote, or a biometric scan instead of a physical key.
  • We installed a keyless entry on the front door for the delivery drivers.

Variants and Related Words

• Key (noun): The physical object traditionally used to lock or unlock something.
• Key fob (noun): A small electronic device used for keyless systems to remotely control locks or start engines.
• Keypad (noun): A set of buttons with digits or symbols, often used for entering codes in keyless systems.

Synonyms

• Key-free: Operating without a traditional key.
• Digital lock: A lock that uses electronic means, often keyless, for access.

Antonyms

• Keyed: Requiring or operated by a physical key.

Adjective

1. lacking or not requiring a key
   • a keyless lock operated by a series of pushbuttons