valetudinary

borrowed from Latin valētūdinārius “incapacitated by ill health, invalid,” from valētūdin-, valētūdō “good health, health in general, illness” (from valēre “to have strength, be well” + -tūdin-, -tūdō, suffix forming abstract nouns) + -ārius ²-ary — more at wield

noun derivative of ¹valetudinary