Ail

Chamber's Twientieth Century Dictionary · 1908 · p. 5

āl, v.i. to feel pain: to be in trouble.— v.t. to trouble, afflict— obs. except in impers. phrase 'What ails you?'— n. trouble: indisposition.— n. Ail′ment , pain: indisposition: disease. [A.S. eglan , to pain. See Awe .]