Muck/mʌk/ Definition 1 of 4Pro Tip 1/3Physical mess The term often describes areas left dirty after an event with many people. I volunteered to clean up the muck at the park post-concert. Pro Tip 2/3Negative Connotation 'Muck' suggests unpleasantness or something that should be removed. The abandoned lot was full of muck and debris. Pro Tip 3/3Figurative Use 'Muck' can be used to describe a situation that is chaotic or troublesome. The project became a bureaucratic muck that hindered progress.