sub·sist 
/səbˈsɪst/ verb
sub·sists; sub·sist·ed; sub·sist·ing /səbˈsɪst/ verb [no obj] formal : to exist or continue to exist
▪ The author's right to royalties shall subsist for the term of the copyright.
▪ The author's right to royalties shall subsist for the term of the copyright.
subsist on [phrasal verb]
subsist on (something) : to use (something) as a way to stay alive : to live on (something)
▪ poor people subsisting on just one or two dollars a day ▪ The villagers subsist almost entirely on rice and fish. ▪ (humorous) My brother subsists on [=eats a lot of] pizza.
▪ poor people subsisting on just one or two dollars a day ▪ The villagers subsist almost entirely on rice and fish. ▪ (humorous) My brother subsists on [=eats a lot of] pizza.
