Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun plummet
1 sense of plummet
Sense 1
plumb bob, plumb, plummet -- (the metal bob of a plumb line)
=> bob -- (a hanging weight, especially a metal ball on a string)
Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb plummet
1 sense of plummet
Sense 1
plummet, plump -- (drop sharply; "The stock market plummeted")
=> drop -- (to fall vertically; "the bombs are dropping on enemy targets")