To forestall is defined as to prevent something from happening, or to prevent someone from doing something.(verb)
When a snowstorm stops a wedding from happening, this is an example of a time when it forestalls the wedding.
See forestall in Webster's New World College Dictionary
Origin: ME forestallen < forestal, ambush < OE foresteall: see fore & stall
See forestall in American Heritage Dictionary 4
transitive verb fore·stalled, fore·stall·ing, fore·stalls
Origin: Middle English forestallen, to waylay and rob
Origin: , from forestal, highway robbery, ambush
Origin: , from Old English foresteall
Origin: : fore-, fore-
Origin: + steall, position; see stel- in Indo-European roots.
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