出典:Wiktionary
出典:『Wiktionary』 (2026/07/15 18:07 UTC 版)
| ← 80 | 81 | 82 → |
|---|---|---|
| Cardinal: eighty-one Ordinal: eighty-first Abbreviated ordinal: 81st Adverbial: eighty-one times Fractional: eighty-first |
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eighty-first
English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.