dive
verb [ I ]
uk/daɪv/ usdived | US also dove | divedto suddenly become less valuable:
Shares prices dived 3.5% today to a three-month closing low.
Pre-tax profits dove almost 60% to $105m against $245m in the same period last year.
dive
noun [ C, usually singular ]
uk/daɪv/ usa sudden loss of value or success:
The bond market traded nervously as many shares on Wall Street took a dive and oil prices soared.