From Longman Dictionary of Contemporary Englishshakeupshake‧up /ˈʃeɪkʌp/ noun [countable] BBCHANGE/MAKE something DIFFERENTa process by which an organization makes a lot of big changes in a short time to improve its effectivenessshakeup of a big shakeup of the education system
Examples from the Corpus
shakeup• The announcement was made just days after Chung Mong Koo became chairman in a group management shakeup.• a sweeping shakeup in the company's middle management• An Apple Computer spokeswoman and other sources confirmed the shakeup at the vice president level.From Longman Business Dictionaryshakeupshake‧up /ˈʃeɪkʌp/ noun [countable] a process in which an organization makes lots of changes in a short time in order to become more successful, effective etcThe shakeup could cost as many as 3,000 of the bank’s 41,600 employees their jobs.High-levelmanagement shakeups were announced at two major Japanese brokerage firms. 