thirty
|thir/ty|
🇺🇸
/ˈθɜːrti/
🇬🇧
/ˈθɜːti/
the number 30; a group of three tens
Etymology
'thirty' originates from Old English, specifically the word 'þrītig', where 'þrī-' meant 'three' and '-tig' meant 'group of ten'.
'þrītig' changed from Old English to Middle English 'thritti', and eventually became the modern English word 'thirty'.
Initially, it meant 'three tens', and this meaning has remained the same in modern usage as the number 30.
Meanings by Part of Speech
Noun 1
the years of a person's life from age 30 to 39, or the decade from 30 to 39 in a century.
She enjoyed her thirties more than her twenties.
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Numeral 1
the number 30; the number after twenty-nine and before thirty-one.
There are thirty students in the class.
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Idioms
Last updated: 2025/07/26 13:40