Answer: sustaining

AnswerCrossword Clue
sustainingUphold, affirm, or confirm the justice or validity of
sustainingCause to continue or be prolonged for an extended period or without interruption
sustainingSUSTAIN, to maintain by providing with food and drink
sustaining(of a performer) Represent (a part or character) convincingly
sustainingBear (the weight of an object) without breaking or falling
sustainingUndergo or suffer (something unpleasant, esp. an injury)
sustainingStrengthen or support physically or mentally