Slump(noun)
To fall in price, value, number, etc., suddenly and by a large amount.
Hindi meaning:भारी मात्रा में और अचानक गिरावट
Synonyms: Drop, Decline, Tumble, Fall off
Antonyms: Increase, Rise, Boom, Ascend
Example: Profits slumped by over 50 per cent.
Trick to remember: Economy me ekdam se slump aagya. 
