negativeone
nounUK /ˈnɛɡətɪv wʌn/
US /ˈnɛɡətɪv wʌn/
Negative one is the number that is one less than zero.
If you take away one from zero, you get negative one.
RELATED WORDS
OTHER MEANINGS
2. A value representing a loss or a decrease of one unit.
The temperature dropped by negative one degree overnight.
3. In computing, a common value meaning 'not found' or an error code.
The function returned negative one to show the item was missing.
4. A score or mark one point below zero in a game.
He ended the round with negative one point.