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| lose mind (Andrey Truhachev); be out of one's wits; lose one's mind; lose one's reason; lose one's senses; dement; take leave of one's senses; lose sanity; take leave of senses (Anglophile); go daft; lose reason; be out of senses (Andrey Truhachev); be out of mind (Andrey Truhachev); unravel (Toward the end of his life Morphy unraveled. joyand) | |||
| come undone (Her mind has come undone, I fear. Andrey Truhachev) | |||
| be off beam (VLZ_58) | |||
| go cuckoo (VLZ_58) | |||
| get mad; go mad | |||
| become of unsound mind (igisheva) | |||
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| fall into pieces (elkaletom) | |||