Wiktionary
a. 1 (context numerical analysis English) Having a high condition number. 2 Having a poor condition.
Usage examples of "ill-conditioned".
On the front shelf of the bar stood a large German-silver pitcher of water, and scattered about were ill-conditioned lamps, with wicks that always wanted picking, which burned red and smoked a good deal, and were apt to go out without any obvious cause, leaving strong reminiscences of the whale-fishery in the circumambient air.
You are much too inclined to find excuses for scrubs, Stephen: you preserved that ill-conditioned brute Scriven from the gallows, nourished him in your bosom, gave him your countenance, and who paid for it?
All the same, Lina Trass had better have married Dan Liss, who never in his life bounced man, woman, or child, than an ill-conditioned braggart like Sabine.
Have I not been searching every nook and cranny in this vile tub and the Dear knows she has a thousand of both systematically searching for my rosin, my only piece of rosin since an ill-conditioned rat ate the others.