Definition of "old age" [old age]

• The latter part of life, the part of life after one's prime. (noun)

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• "A better ruler was Guido Lucio, who in his old age in 1389 was thrown into prison by his sons, where he ended his days."
• "Afflicted with Diabetes Type I since the age of eight, Jen was taking ten different medications at the ripe old age of twenty, including insulin, as well as meds for general pain, neuropathy, and fibromyalgia."
• "He escaped annihilation with Crassus at Carrhae, then governed Syria extremely well at the ripe old age of thirty."