Definition of Sinclair, Upton in English:

Sinclair, Upton

proper noun

  • (1878–1968), US novelist and social reformer; full name Upton Beall Sinclair. He agitated for social justice in 79 books, including "The Jungle" (1906) and the 11-volume “Lanny Budd” series (1940–53)

Pronunciation:

Sinclair, Upton

/sinˈkle(ə)r/