"Musses up" is a colloquial phrase that means to mess up or to make something untidy. There are several synonyms for this term including disarrange, clutter, jumble, disorganize, disturb, mix up, scramble and mess up. These words can be used interchangeably with "musses up" to describe the same chaotic situation. For example, instead of saying "my sister always musses up my room," you could say "my sister always disarranges my room." Finding synonyms for common phrases can enhance writing and communication skills while also expanding vocabulary.