Gunge is a word that typically refers to a slimy, sticky, and unpleasant substance. Synonyms for gunge include slime, goo, muck, grime, and filth. These words suggest something dirty and unpleasant to the touch. Other synonyms for gunge include sludge, mud, and ooze which suggest a dense and sticky consistency that is difficult to remove. In more informal language, the word gunge can be synonymous with "gunk" or "crud." In general, the word gunge is associated with something unpleasant and messy, and therefore it is important to use the right synonym depending on the context in which it is used.