(transitive) Hypothetically, to undo the playing of. / (transitive, intransitive) To interact with something in a way that subverts the conventions of playing.

present participle of backslide

(Cockney rhyming slang) A state (of upset, worry).

(transitive, slang, dated, horse racing) To geld (a horse). / Used other than figuratively or idiomatically: see add, list. / (transitive) To consider as an additional example to an expansive list.