food and drink regarded as a source of strength; nourishment.
“poor rural economies turned to potatoes for sustenance”
synonyms: nourishment, food, nutriment, nutrition, provisions, provender, rations;
the maintaining of someone or something in life or existence.
“he kept two or three cows for the sustenance of his family”
synonyms: support, maintenance, keep, living, livelihood, subsistence, income
“the sustenance of his family”