Wiktionary
on the outs
prep.phr. (context chiefly US idiomatic English) On unfriendly terms; estranged.
Wikipedia
On the Outs
On the Outs is a 2004 drama film chronicling three young women in Jersey City, New Jersey and the decisions they make in the period of a couple weeks.
One girl is a 17-year-old drug dealer, one girl is a teenage drug addict with a child and one is a teenager dealing with pregnancy.