What does disloyally mean?
Disloyally is a formal adverb describing action taken in breach of loyalty — behaving in a way that betrays a person, organization, or cause to which one owes allegiance. It is the adverbial form of the adjective "disloyal," and it appears most often in political and journalistic writing, as in accusations that a minister acted disloyally by leaking confidential discussions or that an employee behaved disloyally toward a longtime employer. The word carries a strong moral charge: unlike mere disagreement or criticism, acting disloyally implies a violation of trust and an obligation of fidelity. It derives from "loyal," which entered English from Old French "loial" (modern French "loyal"), ultimately tracing back through Latin "legalis" ("of the law") — so at root, being loyal meant abiding by lawful obligations. English forms the negative with the prefix "dis-", giving the family: loyal, disloyal, disloyalty, and disloyally. Because of its accusatory tone, the adverb is rarely neutral in register; it is a word of censure.
adverbIn a manner that betrays a person, group, or cause to which one owes loyalty; with disloyalty.
- In a manner that betrays allegiance, fidelity, or duty to a person, group, institution, or cause.
"The minister acted disloyally by leaking cabinet discussions to the press."
"He behaved disloyally toward the colleagues who had mentored him for years."
"Critics accused the senator of acting disloyally to her party by backing the opposition's bill."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of disloyally
Disloyally is formed within English from the adjective "disloyal" plus the adverbial suffix "-ly." "Loyal" came into Middle English from Old French "loial," meaning faithful or legal, which descends from Latin "legalis," "pertaining to the law" — reflecting the medieval idea that loyalty was a matter of lawful fealty. The negative prefix "dis-", from Latin, was added to produce "disloyal," attested by the early modern period, with "disloyally" and "disloyalty" following as natural derivations. Cognates include French "loyal" and "désloyal," sharing the same Latin source.
Related word forms
How disloyally is actually used
A formal, largely written word, most common in political commentary, journalism, and institutional contexts. It carries strong moral condemnation, implying betrayal of an owed obligation rather than mere disagreement. It is typically used with verbs such as act, behave, or conduct oneself.
Easily confused with disloyally
"Dishonestly" means without honesty or truthfulness, while "disloyally" means betraying allegiance or faithfulness to a person or cause — one can be honest yet disloyal.