untreasure means to despoil of treasure. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From un- + treasure.
verb
- To despoil of treasure.“When Cluffe […] returned to the drawing-room, […] he was a good deal chagrined to find the drawing-room 'untreasured of its mistress.'”
- To display or set forth.“J. Mitford
the quaintness with which he untreasured, as by rote, the stores of his memory”