abreact
To eliminate previously repressed emotions by reliving past experiences.
transitive
HEATHER: But he'd deny it afterwards. Same thing all over. / DYSART: No. Because he's ready to abreact. / HEATHER: Abreact? / DYSART: Live it all again.
Where it comes from
Partial calque of German abreagieren, from ab (“away from, off, down from”) + reagieren (“to react”), equivalent to ab- + react.
Adapted from the Wiktionary entry abreact (CC BY-SA 4.0).