Synonyms to turn against

apostatize, apostacize, betray, bolt, break away, change sides, defect, degenerate, desert, fall away, fall off, go over, let down, pull out, rat, renegade, renege, renounce, repudiate, run out on, secede, sell out, switch, switch over, tergiversate, turn, turn cloak, turn traitor, collaborate, accord, acquiesce, act in concert, act the traitor, act together, affiliate, agree, ally, amalgamate, associate, author, band, band together, be agreeable to, be dying to, be eager, be game, be in cahoots, be in league, be open to, be ready, be spoiling for, be willing, club together, coact, coadunate, coalesce, coauthor, coincide, collude, combine, compose, concert, concord, concur, confederate, conjoin, connive, consent, consolidate, conspire, cooperate, correspond, dash off, do business with, editorialize, federate, formulate, fraternize, free-lance, fuse, get heads together, get together, ghost, ghostwrite, go along with, go partners, hang together, happen together, harmonize, hold together, hook up, incline, indite, join, join forces, join in, join together, keep together, knock off, knock out, leag