The quality or state of being without health; poor physical condition.
From 'healthless' (health + -less) combined with '-ness', stacking two suffixes to create an abstract noun denoting the condition of lacking health.
Piling suffixes like 'health-less-ness' shows how English builds complex meanings by layering—but it's rarely used because 'sickness' or 'illness' do the job more efficiently, reminding us that just because you *can* build a word doesn't mean speakers will actually use it!
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