1. fell or dropped straight down very quickly
Usage: past tense of plummet
2. decreased rapidly in value, amount, or degree
Usage: past tense of plummet; often used with prices, temperatures, or statistics

Examples

• The rock plummeted from the cliff into the ocean below.
• Stock prices plummeted after the company announced losses.
• The temperature plummeted overnight, causing ice to form.
• His approval ratings plummeted following the scandal.
• The plane plummeted toward the ground before the pilot regained control.
• Sales plummeted during the economic recession.
• The bird plummeted from the sky and landed in the field.