legitimacy

noun

le·​git·​i·​ma·​cy li-ˈji-tə-mə-sē 

: the quality or state of being legitimate

Synonyms of legitimacy

• lawfulness
• legality

Examples of legitimacy in a Sentence

the legitimacy of the military dictatorship was not recognized by most other nations

Recent Examples on the Web

The jewel of the offseason, Peralta was supposed to bring legitimacy to an uncertain rotation. — Abbey Mastracco, New York Daily News, 26 July 2026

Norah and Magdalen learn that they were technically born out of wedlock and, because of a legitimacy codicil in their father’s will, are therefore unable to receive their parents’ money. — Literary Hub, 24 July 2026

Logos, colors and digital experiences reinforce legitimacy throughout these interactions. — Scott Hambuchen, Forbes.com, 23 July 2026

PsiQuantum is part of DARPA’s Quantum Benchmarking Initiative, which started as a way to evaluate the legitimacy of quantum startups and could give investors comfort that the company is not headed down a blind alley. — Reed Albergotti, semafor.com, 22 July 2026

Word History

First Known Use

1625, in the meaning defined above

Rhymes for legitimacy

• illegitimacy

Kids Definition

legitimacy

noun

le·​git·​i·​ma·​cy li-ˈjit-ə-mə-sē 

: the quality or state of being legitimate

Legal Definition

legitimacy

noun

le·​git·​i·​ma·​cy li-ˈji-tə-mə-sē 

: the quality or state of being legitimate