instantchecker
nounUK /ˈɪnstəntˌtʃɛkə/
US /ˈɪnstəntˌtʃɛkər/
A tool that tells you something right away.
The instantchecker showed the answer before I could blink.
OTHER MEANINGS
2. A person who checks things very quickly.
The instantchecker at the gate looked at every ticket in seconds.
3. A software feature that confirms information immediately.
The app's instantchecker flagged the typo as I typed.
4. A device that tests something without delay.
The instantchecker beeped green when the battery was full.