disloyally
/dɪsˈlɔɪəli/
adverb
- In a way that shows a lack of loyalty or faithfulness; treacherously.
- She acted disloyally by revealing her colleague's secret to the boss.
- The knight was accused of behaving disloyally when he switched sides during the battle.
- He disloyally shared the team's strategy with their rivals.
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