Turning Off Flags

Hi!
I was wandering if there’s a way to turn off a flag?
Say in one part of my story I wrote the following:
gain Hungry
and once the character is fed I’d like to undo that action. Is there some kind of opposite action to “gain” I could use?

There’s no way to do it now. There’s talk about this feature being released to the public later on.

OK. Thanks!