subsist
verb
sub·sist
| \ səb-ˈsist
\
\
subsisted;
subsisting;
subsists
Definition of subsist
2
: to have or acquire the necessities of life (such as food and clothing)
especially
: to nourish oneself
subsisting on roots, berries and grubs
3a
: to hold true
b
: to be logically conceivable as the subject of true statements
: to support with provisions