だいな台無dainaしshiだい台daiなしnashi
1.
A condition where something has lost its effectiveness or value due to significant disruption, rendering it useless or in disarray.
2.
The state of affairs where efforts or resources invested in something are rendered completely ineffective or wasted, leading to disappointment.
3.
A scenario in which a previously intact situation is completely compromised, often resulting in failure or an absence of purpose.
Example:
風やら雨やらで旅行は台無しだった。