Home › Words › D › disloyaltydisloyalty/dɪsˈlɔɪ.(j)əɫ.ti/disloyalty means an act of being disloyal; a betrayal, faithbreach.disloyalty is pronounced /dɪsˈlɔɪ.(j)əɫ.ti/.EtymologyFrom Old French desloiauté (Modern French déloyauté), from des- + loiauté (“loyalty”).nounAn act of being disloyal; a betrayal, faithbreach.The quality of being disloyal.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.disloyalness 79% match — The state or quality of being disloyal. vs disloyalty →disloyally 78% match — In a disloyal manner. vs disloyalty →disloyal 77% match — Not loyal, without loyalty. vs disloyalty →illoyal 75% match — Disloyal. vs disloyalty →disleal 70% match — disloyal; perfidious vs disloyalty →disloyalist 69% match — One who is disloyal to a cause. vs disloyalty →treachery 69% match — Deliberate, often calculated, disregard for trust or faith. vs disloyalty →perfidy 68% match — A state or act of violating faith or allegiance; violation of a promise or vow, or of trust. vs disloyalty →