English

Definition of plummet verb from the Oxford Advanced Learner's Dictionary

 

plummet

 verb
verb
BrE BrE//ˈplʌmɪt//
 
; NAmE NAmE//ˈplʌmɪt//
 
[intransitive]Verb Forms present simple I / you / we / they plummet
BrE BrE//ˈplʌmɪt//
 
; NAmE NAmE//ˈplʌmɪt//
 
he / she / it plummets
BrE BrE//ˈplʌmɪts//
 
; NAmE NAmE//ˈplʌmɪts//
 
past simple plummeted
BrE BrE//ˈplʌmɪtɪd//
 
; NAmE NAmE//ˈplʌmɪtɪd//
 
past participle plummeted
BrE BrE//ˈplʌmɪtɪd//
 
; NAmE NAmE//ˈplʌmɪtɪd//
 
-ing form plummeting
BrE BrE//ˈplʌmɪtɪŋ//
 
; NAmE NAmE//ˈplʌmɪtɪŋ//
 
Trends
 
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to fall suddenly and quickly from a high level or position synonym plunge 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. Wordfinderboom, decline, dip, fluctuate, level off/​out, peak, plateau, plummet, slump, trend See related entries: Trends Word Origin late Middle English (as a noun): from Old French plommet ‘small sounding lead’, diminutive of plomb ‘lead’. The current verb sense dates from the 1930s.
See the Oxford Advanced American Dictionary entry: plummet