Synonyms for sustain

verb

1. To carry

   bear, support, bear on the shoulder, carry on the back, hold up, support the weight of, keep from falling, keep from sinking, convey, transport, transfer, put a shoulder under, pack*, tote*, lug*.

   Antonyms abandon*, drop, desert.

2. To nourish

   keep up, maintain, provide food for, give food to, maintain the health of, keep in health, nurture, supply food for, nurse; see also provide 1, support 2.

   Antonyms neglect*, injure, starve.

3. To defend

   befriend, favor, stand by, support, comfort, side with*, back up*, stand up for*; see also defend 3,

   Antonyms oppose*, hinder*, forsake. See syn. study at support.support.