errorswitch

noun
UK /ˈerə swɪtʃ/
US /ˈerər swɪtʃ/

A button that fixes a mistake when you press it.

She pressed the errorswitch to undo her wrong answer.


OTHER MEANINGS

2. A setting that changes how mistakes are handled in a program.

The errorswitch decides whether the game restarts or just warns you.

3. A toggle that turns automatic error checking on or off.

Turn on the errorswitch so the app catches typos as you type.

4. A device that swaps one faulty part for a working one.

The engineer flipped the errorswitch to reroute power around the broken circuit.

5. A moment when someone changes their mind after realizing a mistake.

His sudden apology was an errorswitch after he saw the evidence.