口が固い
Meanings
Adjective (い)
Expression
1. tight-lipped; able to keep a secret
| Used in | Used in % | |
|---|---|---|
| Anime | 2 | (0%) |
| Live action | 2 | (0%) |
| Visual novels | 15 | (2%) |
| Novels | 33 | (2%) |
| Non-fiction | 0 | (0%) |
| Web novels | 19 | (1%) |
| Aozora Bunko | 4 | (0%) |
Used in
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