spoil

Well, I am 99.9% certain that I know the answer, Georgie, so I don't want to spoil it for our listeners, so we'll just find out at the end.

When the chance of reaching a truly happy state appears, we’ll subtly discover ways to introduce a chasm: we’ll have an argument, spoil a birthday, ruin a holiday.

The tragedy of the commons is a situation in which individuals acting in their own self-interest behave contrary to the common good of all others by depleting or spoiling the shared resource through their collective action.