口が堅い
Meanings
Adjective (い)
Expression
1. tight-lipped; able to keep a secret
| Used in | Used in % | |
|---|---|---|
| Anime | 15 | (1%) |
| Live action | 29 | (2%) |
| Visual novels | 37 | (7%) |
| Novels | 109 | (7%) |
| Non-fiction | 1 | (0%) |
| Web novels | 62 | (5%) |
| Aozora Bunko | 9 | (1%) |
Used in
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