| Word form | shimai |
| Original script | 姉妹 |
| LWT meaning(s) | |
| Analyzability | analyzable compound |
| Gloss | shi-mai elder_sister-younger_sister |
| Age | Old Japanese [21] (710–794) |
| Lexical stratum | kango |
| Year | 続日本記 (729) |
| Comparison with Mandarin | different term |
| Register | General |
| Numeric frequency | 32.5 |