| Word form | kuchi |
| Original script | 口 |
| LWT meaning(s) | |
| Analyzability | unanalyzable |
| Age | Old Japanese [21] (710–794) |
| Lexical stratum | wago |
| Year | 古事記 (712) |
| Comparison with Korean | Class 3: (K term means ’hollow, cavity’): K kut(ëngi) < MK kut, kus < *kutyi, kusyi. (150) |
| Register | General |