The term 'major disruption' can be summarized by two crossword solutions: SNAFU (5 letters) and RIOTING (7 letters). SNAFU stands for 'Situation Normal All Fouled Up' and is a military slang term used to describe a chaotic or confused situation. RIOTING is an act of public disorder involving a group of people who are violent and destructive, often in protest of something. Both terms refer to a major disruption of the status quo, whether it be a chaotic situation or a violent protest.