mispledge means to pledge foolishly or in error. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From mis- + pledge.
verb
- To pledge foolishly or in error.“The Dubuque and Sioux City bonds (so mispledged to the firm, and two of them by the firm to the bank) fell due July 1st, 1894 (fols. 281, 314, 340), and on demand of Randall, acting for the plaintiffs, that their proceeds should go to the estate, Bunker shifted securities so as to accomplish this (fols. 281-4).”