出典:Wiktionary
出典:『Wiktionary』 (2026/02/24 02:20 UTC 版)
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| Cardinal: thirty Ordinal: thirtieth Abbreviated ordinal: 30th Adverbial: thirty times Multiplier: thirtyfold |
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From earlier thirteth, from 中期英語 thrittithe, threttiþe, thrittyde, from 古期英語 þrītigoþa; equivalent to thirty + -eth. For the modern form, see the etymological notes at twentieth.
thirtieth (plural thirtieths)
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the thirtieth
the thirtieth
the thirtieth
the fortieth
the fiftieth
the twentieth
the twentieth
the ninetieth
10分の8
eight-tenths
the hundredth
the sixtieth
the seventieth
the eightieth
the ninth
the seventh
the fourth