English edit

 
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Etymology 1 edit

From forestall +‎ -ing.

Verb edit

forestalling

  1. present participle and gerund of forestall

Etymology 2 edit

From Middle English forstallyng, forstallynge, equivalent to forestall +‎ -ing.

Noun edit

forestalling (plural forestallings)

  1. The act of one who forestalls.