1. A significant or considerable decrease in value, amount, or level
The stock market experienced a substantial fall after the economic crisis.
O mercado de ações experimentou uma queda substancial após a crise econômica.
2. A large or notable physical descent or drop
There was a substantial fall in the water level during the drought.
Houve uma queda substancial no nível da água durante a seca.
3. A significant decline in performance, status, or reputation
The company saw a substantial fall in profits last quarter.
A empresa registrou uma queda substancial nos lucros no último trimestre.