misworking means incorrect working; malfunction. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From mis- + working.
noun
- incorrect working; malfunction“[…] which apparatus is furnished with a whistle, which gives a continuous shrill call when the water is too low, or if there should be an over-pressure of steam by reason of any misworking of the safety-valve.”