Illth

Illth, coined by John Ruskin, is the reverse of wealth in the sense of "ill" being the opposite of "well".
In Ruskin's view:
Various other writers have used the term, and continue to do so. A notable example is George Bernard Shaw, who used illth as a subheading in an 1889 essay.
In the context of modern economic theory and practice, the term has been central to the work of Herman Daly and his advocacy for a Steady-state economy.