The term "cause of ruckus" is often used to describe an event or situation that creates chaos, disturbance, or commotion. There are many synonyms for this phrase that can be used interchangeably in order to add variety to your writing or speech. Some synonyms for "cause of ruckus" include "rowdy behavior", "uproar", "turmoil", "disruption", "cacophony", "pandemonium", "bedlam", "uproariousness", "chaos", and "mayhem". Using any of these synonyms can help spice up your writing and convey the same meaning as "cause of ruckus".