Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun sustainment
1 sense of sustainment
Sense 1
sustenance, sustentation, sustainment, maintenance, upkeep -- (the act of sustaining life by food or providing a means of subsistence; "they were in want of sustenance"; "fishing was their main sustainment")
=> support -- (the activity of providing for or maintaining by supplying with money or necessities; "his support kept the family together"; "they gave him emotional support during difficult times")