Omnium-gatherum is a noun that refers to a collection of diverse things. It can also mean a hodgepodge or a jumble. Some synonyms for this word include a mishmash, an assortment, and a mix-up. Other words that could be used to convey a similar meaning include a conglomeration, a melange, and a medley. These words all suggest a mixture of various elements, and they can be used interchangeably with omnium-gatherum. When seeking to describe a collection of random items or a disorganized set of things, these synonyms can be incredibly helpful in enhancing our language and giving more depth to our writing.