To enclose or secure something in a vault; to place something in a strong protective container or storage.
From 'en-' (to cause to be) plus 'vault' (secure underground chamber). This follows the productive pattern of English verbs created with the 'en-' prefix.
Banks literally 'envault' your money, but the metaphorical use is richer—when someone 'envaults' their emotions, they're locking them away, which is exactly the psychological pattern therapists work to unlock.
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