

| Readings | On-reading | こ |
| Kun-reading | かためる かたまる かたい |
|
| Meaning | hard / solid | |
| Radical | 囗 | |
| Stroke count | 8 | |
| JLPT Level | N2 | |
Stroke order of 「固」
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Vocabulary contains 「固」
| Word | Meaning |
| 固い(かたい) | stiff |
| 頑固な(がんこな) | stubborn |
| 固まる(かたまる) | to harden |

