indigent
Meaning: very poor, impoverished
Usage: I would rather donate money to help the indigent population than to the park sculpture fund.
impecunious
Meaning: poor
Usage: “I fear he’s too impecunious to take me out tonight,” the bratty girl whined.
destitute
Meaning: impoverished, utterly lacking
Usage: The hurricane destroyed many homes and left many families destitute.