Kibosh is my new word. I use it all of the time. I think it has to do with the fact that I'm putting a kibosh on my life as I know it.
Kibosh on being unhappy
Kibosh on being taken advantage of
Kibosh on group activities
Kibosh on feeling like crap
Kibosh on not having a relationship with God
Kibosh on being unhealthy
Kibosh on not being appreciated!
So, use it, embrace it, put a Kibosh on the things you loathe!