go rogue
verb1
To begin to behave in an erratic, uncontrolled, dangerous, destructive, or savage way.
2
Idiomatic To behave in a very unconventional, independent, uncontrolled, or unauthorized way that ignores rules, norms, or expectations.
- As the Biden administration and its allies try to secure an elusive cease-fire in Gaza, Israel appears to have gone rogue.2024 August 2, Steven Erlanger, “Netanyahu, Defiant, Appears to Have Gone Rogue, Risking a Regional War”, in The New York Times, →ISSN:
3
Idiomatic To defect, or to repudiate allegiance, fealty, affiliation, or membership. (For example, a spy or soldier in relation to a country; or a politician in relation to a political party; or an employee; or a club member.)