allow vs forestall

allow

verb
  • To grant (something) as a deduction or an addition; especially to abate or deduct. 

  • To not bar or obstruct. 

  • To render physically possible. 

  • To grant, give, admit, accord, afford, or yield; to let one have. 

  • To acknowledge; to accept as true; to concede; to accede to an opinion. 

  • To grant license to; to permit; to consent to. 

  • To take into account by making an allowance. 

  • To decide (a request) in favour of the party who raised it; to grant victory to a party regarding (a request). 

forestall

verb
  • To deprive (with of). 

  • To obstruct or stop up, as a road; to stop the passage of a highway; to intercept on the road, as goods on the way to market. 

  • To anticipate, to act foreseeingly. 

  • To preclude or bar from happening, render impossible. 

  • To prevent, delay or hinder something by taking precautionary or anticipatory measures; to avert. 

noun
  • Something situated or placed in front. 

How often have the words allow and forestall occurred in a corpus of books? (source: Google Ngram Viewer )