disloyalty

noun

dis·​loy·​al·​ty (ˌ)dis-ˈlȯi(-ə)l-tē 

: lack of loyalty

Synonyms of disloyalty

• infidelity
• adultery
• betrayal
• perfidy
• faithlessness
• treachery

Examples of disloyalty in a Sentence

His disloyalty to the company led to his dismissal.

She had no tolerance for disloyalty among those under her command.

Recent Examples on the Web

There’s a sense that doubt would be a form of disloyalty to what came before you, or that admitting a weakness undermines the confidence of the people around you. — Flavio Maluf, Forbes.com, 20 Oct. 2026

During the government’s response to protests in 2014, Maduro instructed officials to increase the intensity of interrogations involving military personnel suspected of disloyalty, prosecutors say. — Antonio María Delgado, Miami Herald, 15 Oct. 2026

Anything less will demonstrate societal disloyalty to the government and opposition to the Ukraine War. — Regina Smyth, The Conversation, 16 Sep. 2026

Article 158 concerns criminal mismanagement, sometimes described as breach of trust or disloyalty. — Michael McCann, Sportico.com, 27 Aug. 2026

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for disloyalty

• viceroyalty
• loyalty
• royalty