live off sb/sth
phrasal verb with live verb uk/lɪv/ us
( US live off of sb/sth) to get the money that you need to pay for food, a place in which to stay, clothing, etc. from someone or something:
live off benefits/income/interest
live off earnings/a pension/savings She has been living off her savings since she lost her job in December.
Many young unemployed people are still living off their parents.