everything-or-nothing

adjective
UK /ˈev.ri.θɪŋ ɔː ˈnʌθ.ɪŋ/
US /ˈev.ri.θɪŋ ɔːr ˈnʌθ.ɪŋ/

This means you either get all of something or you get none of it.

Her everything-or-nothing attitude made her quit the game when she lost the first point.


OTHER MEANINGS

2. A way of thinking where there is no middle ground between complete success and complete failure.

His everything-or-nothing thinking made every small mistake feel like a disaster.

3. A situation where a full result is needed, and a partial result counts for nothing.

The final round was everything-or-nothing: win it or go home empty-handed.

4. A style of approach that gives total effort or no effort at all.

She trained with everything-or-nothing energy, never doing anything halfway.