envault means to enclose in a vault, or as if in one, i.e. to entomb. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From en- + vault.
verb
- To enclose in a vault, or as if in one, i.e. to entomb.“I wonder, good man, that you are not envaulted;
Prithee go, and be dead, and be doubly exalted”