plummet

US /ˈplʌm.ɪt/
UK /ˈplʌm.ɪt/
"plummet" picture
1.

fall or drop straight down at high speed

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The plane plummeted to the ground after engine failure.
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The stone plummeted into the deep well.
:
dropfalldivetumbledescend rapidly
2.

decrease rapidly in value or amount

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Stock prices plummeted after the news.
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His popularity plummeted after the scandal.
:
collapsedeclinedropfallnosedivesinkslumptumble
1.

a steep and rapid fall or drop

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The company experienced a sudden plummet in sales.
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We watched the bird's rapid plummet from the sky.
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dropfalldeclinedescentnosediveslump