Our aim is to forestall all those risks.

He forestalled everybody in accomplishing.

'Once had your hands,' said Calchas, 'dared profane / Minerva's gift, dire plagues' (which Heaven forestall / or turn on him) 'should Priam's realm sustain; / but if by Trojan aid it scaled your wall, / proud Asia then should Pelops' sons enthrall, / and children rue the folly of the sire.'"

Had I but known what she intended, I might have forestalled this debacle.

This campaign cannot forestall new Zika virus outbreaks.