うらぎ裏切uragiるru
1.
To act in a way that goes against a promise or trust, aligning oneself with the opposing side or disloyalty towards someone regarded as an ally.
2.
To display behavior that contradicts the expectations or predictions held by others, resulting in a surprising or disappointing outcome.
3.
To violate one’s own beliefs or principles, effectively deceiving oneself in the process.
Example:
やつは僕を裏切ったんだ！