forswink means to exhaust by labour; overwork. Lexicurio rates it Sui generis — a strength score of 90 out of 100.
Why this word is great
FORSWINK — [Verb] To exhaust by labour; to overwork. From Middle English forswinken, from the intensive prefix for- + swinken (to toil, labour). Unlike “fatigue,” which implies a general weariness, or “overexert,” which focuses on the moment of strain, to forswink is to be rendered hollow by the sheer, accumulated volume of toil. It is the leaden hands of the ploughman at dusk, the vacant stare of the scholar by guttering candlelight, and the profound, creaking silence of a mill after its great wheel is stilled—the body and spirit consumed, the ancient debt of labour paid in full.
verb
- To exhaust by labour; overwork.“She is my goddess plain,
And I her shepherd's swain,
Albe[it] forswonk and forswat I am.”