- Double-crossing - Not faithful - Traitorous - Unpatriotic - Not loyal; not true to a sovereign or lawful superior, or
to the government under which one lives; false where allegiance is due;
faithless; as, a subject disloyal to the king; a husband disloyal to
his wife.
- Dangerous and tricky - Disloyal - Hazardous (surface) - Not loyal - Our teachers are becoming dangerously disloyal - Our teachers have become dangerously unstable - Research out about backstabbing