1.
If you ~ something you need, want, or usually have, you are able to survive, continue, or succeed although you do not have it.
We can’t ~ the help of your organisation...
We’ve had a bit more money and that, and the baby doesn’t ~.
PHRASAL VERB: V P n, V P
2.
If you say that you could ~ something, you mean that you would prefer not to have it or it is of no benefit to you. (INFORMAL)
He could ~ her rhetorical questions at five o’clock in the morning.
PHRASAL VERB: V P n