Disloyally (Adverb)
Meaning
Without loyalty; in a disloyal manner; "his men acted disloyally and betrayed him in the end".
Examples
- The employee disloyally leaked confidential information to a rival company.
 - After being asked to choose between her family and her boyfriend, she disloyally chose the latter.
 - The soldiers acted disloyally towards their commander and refused to follow orders.
 - He treated his friend disloyally by not supporting him during his difficult time.
 - The business partner disloyally concealed profits from his colleague and took the lion's share.