do well verb3 •To succeed; to flourish.Prosimians make good use of shelves, ropes, or swings and do well with natural substrates—such as vines, bamboo, and branches—to climb on or jump among. — 1998 •To take the prudent approach; to be advised.He would do well to listen more carefully to his wife. •To benefit, to favour.The company did well by his family after he died. formsdid well · done well · doing well · does well