extremely poor, impoverished, destitute, penniless, on one's beam-ends, as poor as a church mouse, without a sou, dirt poor, in penury, penurious, impecunious, indigent, needy, needful, in need/want, unable to make ends meet, down and out, necessitous, beggarly, moneyless, bankrupt, in straitened circumstances;

British on the breadline, without a penny (to one's name)

informal broke, flat broke, cleaned out, strapped for cash, strapped, on one's uppers

British informal stony broke, skint, without two pennies/farthings to rub together, in Queer Street

North American informal stone broke

rare pauperized, beggared