Disloyal
Disloyal , adjective
[Prefix dis- + loyal: compare Old French desloial, desleal, French déloyal. See Loyal.]
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.
Without a thought disloyal.