What does legitimacy mean?
Legitimacy means the quality of being recognized as valid, rightful, or properly established. In political and legal contexts, it often describes the authority of a government, institution, leader, or law and may depend on both formal approval and public acceptance. The word can also mean that something is reasonable or justifiable according to recognized principles, as in a question about the legitimacy of a complaint. Its use often carries an institutional or public dimension: something may be lawful on paper, yet still lack legitimacy if it is widely regarded as unfair or improperly imposed. Legitimacy is therefore useful when discussing not only whether a decision exists or complies with formal rules, but also whether it is accepted and ethically defensible. The related adjective legitimate describes something recognized as valid or proper.
nounThe state of being accepted as rightful, valid, or authorized. It can also refer to the quality of being reasonable, justifiable, or conforming to recognized laws and principles.
- The quality of being accepted as rightful, valid, or authorized, especially the rightful authority of a person, institution, or government.
- The quality of being reasonable, justifiable, or consistent with recognized laws and principles.
"The new government struggled to establish legitimacy after the disputed election."
"The court questioned the legitimacy of the regulation under challenge."
"She explained the legitimacy of her concerns by pointing to years of documented mistreatment."
The plural is grammatically possible but uncommon in ordinary usage.
"The study examines competing legitimacies within the political system."
A government can win an election yet still lack legitimacy if its authority is not broadly accepted as rightful.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of legitimacy
Legitimacy entered English in the early 17th century through French légitimité, from Latin legitimus, meaning lawful or regular. Latin legitimus developed from lex, meaning law, and the verb legitimare, meaning to make lawful. English later developed several related forms, including legitimate, legitimise, and legitimize.
Related word forms
How legitimacy is actually used
Legitimacy is relatively formal and is especially common in political, legal, institutional, and ethical contexts. It can imply either objective validity or the perception that something is accepted as proper.
Easily confused with legitimacy
Legitimacy is the quality of being valid or rightful, whereas legitimate is usually an adjective describing something that is lawful, proper, or justified.
Legitimacy is a noun naming a state or quality, while legitimise is a verb meaning to make something legitimate or give it formal recognition.