hot-wire
UK[ˈhɒt waɪə]US[ˈhɑːt waɪər]
v
To start a vehicle's engine without a key, typically by connecting wires under the dashboard to bypass the ignition system.
adj
Describing a vehicle that has been started in this way.
Morpheme Breakdown
hot
wire
hot
active
wire
electrical conductor
Etymology
The term 'hot-wire' is a modern compound verb originating in mid-20th century American English, directly from the automotive and electrical trades. It combines the adjective 'hot,' in its slang sense of a live electrical circuit carrying current, with 'wire,' the physical conductor. The literal action involves touching a "hot" wire (carrying battery voltage) directly to the ignition wire, creating a short circuit that sparks the engine to life, bypassing the key-operated switch. This vivid imagery of using a "live wire" evolved from a technical description into a common term for vehicular theft and, by extension, any act of starting a device through an unauthorized, direct connection.
Analysis
Structure: hot (active) + wire (electrical conductor)
- hot: From Old English hāt ("hot, fervent, intense"). In this compound, it carries the transferred sense of "energized," "live," or "directly activated," referring to bypassing a control circuit.
- wire: From Old English wīr ("metal drawn out into a thread"). In this compound, it refers to the electrical conductors within the vehicle's ignition system.
Examples
The thief managed to hot-wire the car in under thirty seconds.
They had to hot-wire the old tractor to get it started after losing the key.
The film's protagonist hot-wires a motorcycle to make a quick escape.