shake-up noun

ADJ. big, major, radical | urgent | boardroom, council, personnel VERB + SHAKE-UP need | call for The paper calls for an urgent shake-up in the system for looking after the elderly. | plan The headline read ‘Local council plans shake-up’. | face, go through, have, undergo Police forces face the biggest shake-up in their 150-year history. | survive My job did not survive the shake-up.

PREP. in a/the ~ the posts that were scrapped in the recent shake-up | ~ at a major shake-up at the company | ~ in a radical shake-up in the chemical industry