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/ˈeɪti//ˈeɪti/The origin of the word "eighty" lies in the Anglo-Saxon language. In Old English, the number was spelled "æhta" or "æhtan," which is derived from the Germanic root "achta-," meaning "eight." The word "æhtan" evolved over time, losing its distinct vowel sounds due to the Great Vowel Shift in Middle English. By the 15th century, the word "eihti" was commonly used in Middle English, which is how we get the modern spelling of "eighty." The spellings "eight" and "eighty" both derive from the Old English root, with the latter simply indicating the addition of the prefix "ight-" to distinguish between the number and the word "eight" itself. Overall, the word "eighty" has remained relatively stable in English, with few changes in pronunciation or spelling since the Middle English era.
80
80
numbers, years or temperatures from 80 to 89
số, năm hoặc nhiệt độ từ 80 đến 89
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