不ふ忠ちゅう

na-adjective, noun

disloyalty; infidelity

Refers to a lack of loyalty or faithfulness, often in relationships, duty, or allegiance. Can be used as a noun or adjectival noun (不忠な).

• 彼かれの不ふ忠ちゅうな行こう為いは許ゆるせない。

  I cannot forgive his disloyal act.

• 不ふ忠ちゅうは信しん頼らいを壊こわす。

  Disloyalty destroys trust.