forspend means to spend up; spend completely; exhaust, as by overexertion. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
forspend is pronounced /fɔː(ɹ)ˈspɛnd/.
Why “forspend” is a great word
To consume or expend a resource—be it strength, wealth, or spirit—utterly and to the point of depletion. From the Old English forspendan, built from the intensive prefix for- and spendan (“to spend”). Unlike “exhaust,” a general term for depletion, or “overspend,” which implies exceeding a monetary limit, forspend carries the specific gravity of resources poured out, often wastefully, until the vessel is dry. It is the final, gasping mile run on empty lungs, the fortune dissipated on hollow entertainments, and the last coin spent on a pleasure that has long since faded. It is the quiet testament to the finite nature of all we are given to use.
Etymology
From Middle English forspenden, from Old English forspendan (“to spend up, give out, squander, consume”), equivalent to for- + spend.
verb
- To spend up; spend completely; exhaust, as by overexertion.“a. 1843, Robert Southey, (Inscription) at Borrosa
A painful march, / Through twenty hours of night and day prolong'd, / Forespent the British troops.”