plummet

verb

UK/ˈplʌm.ɪt/
US/ˈplʌm.ɪt/

Definitions of plummet verb

  1. Intransitive

    to fall or drop straight down at high speed

    • The company's stock price plummeted after the announcement of losses.

    • Interest rates plummeted after a year of steady growth.

    • Her heart plummeted when she realized the magnitude of her mistake.