subsistencesub·sis·tence /səbˈsɪstəns/ noun1[uncountableU] a small amount of money or food that is just enough to survive onRefugees are dependent for subsistence on support from aid agencies.
Unfortunately, these people have become used to living at subsistence levels (=with just enough food etc to survive).
Foreign workers are paid subsistence wages by local standards.
2subsistence agriculture/farming etcFARMING farming in which farmers produce just enough food for their families to live on