出典:Wiktionary
出典:『Wiktionary』 (2026/02/22 20:45 UTC 版)
| < 30th | 31st | 32nd > |
|---|---|---|
| Cardinal : thirty-one Ordinal : thirty-first |
||
thirty-first
English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.