Simple past tense and past participle of ail.(verb)
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Use "ailed" in a sentence
"He wondered what had "ailed" the Indian woman, that she should die so suddenly; but it was immaterial, since she"
"Roosevelt considered me something of a Populist, (as I was), and I well remember a dinner in Senator Lodge's house where he and Henry Adams heckled me for an hour or more in order to obtain a statement of what I thought "ailed" Kansas, Nebraska and Dakota."
"M'Swat's) fault that I "ailed" from overwork, as I had never complained and always seemed well."