Badly provided for; not in comfortable circumstances: opposed to well-off.
The Century Dictionary (Public Domain)
Use "ill-off" in a sentence
"It never entered our heads to consider ourselves ill-off for that reason."
"The poor of Paris itself were not so very ill-off, for there were continual distributions of money and flour to keep them in good humour, and there were songs about."
"We demand Free-Trade, with much just vociferation and benevolence, That the poorer classes, who are terribly ill-off at present, may have cheaper New-Orleans bacon."