Learn how to say Forestall correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word forestall:
prevent or obstruct (an anticipated event or action) by taking advance action:
they will present their resignations to forestall a vote of no confidence
act in advance of (someone) in order to prevent them from doing something:
he would have spoken but David forestalled him
historical buy up (goods) in order to profit by an enhanced price.
Old English foresteall ‘an ambush’ (see fore- and stall). As a verb the earliest sense (Middle English) was ‘intercept and buy up goods before they reach the market, so as to raise the price’ (formerly an offence)