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| lose one's mind (Have you lost your fucking mind? – Ты что, сдурела? 4uzhoj); bats in one's belfry; be nuts; have bats in one's belfry | |||
| become stupid | |||
| be off rocker (He's off his rocker if he thinks he can tackle the whole thing alone. 4uzhoj) | |||
| сдуреть: 6 phrases in 3 subjects |
| Disapproving | 1 |
| General | 2 |
| Informal | 3 |