- 1to fall suddenly and quickly from a high level or position synonym plunge
- 2 Share prices plummeted to an all-time low. Her spirits plummeted at the thought of meeting him again. The jet plummeted into a row of houses.
NAmE//ˈplʌmət//[intransitive]Verb Forms present simple I / you / we / they plummet
he / she / it plummets
past simple plummeted
-ing form plummeting