SUSTAIN is validvalid

to maintain by providing with food and drink [v SUSTAINED, SUSTAINING, SUSTAINS] : SUSTAINABILITY [n], SUSTAINABLE [adj], SUSTAINABLY [adv], SUSTAINEDLY [adv]

53,433 of 196,601 in NWL2023·also valid in CSW24

to maintain by providing with food and drink [v -ED, -ING, -S]