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English definition of “eighties”

eighties

noun [plural]     /ˈeɪ.tiz/ US  /-t̬iz/
B2 A person's eighties are the period in which they are aged between 80 and 89: My grandmother is in her eighties.Describing age and birthdays the eighties the range of temperature between 80° and 89°: The temperature is expected to be in the eighties tomorrow.Measurements of temperature B2 the decade (= period of ten years) between 80 and 89 in any century, usually 1980–1989: Margaret Thatcher was the UK prime minister in/during the eighties.Decades, centuries and the millennium
(Definition of eighties noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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