forestall

From Middle English forestallen (“to forestall, intercept, ambush, way-lay”), from forestalle (“a forestalling, interception”), from Old English foresteall (“intervention, hindrance of justice, ambush”), from fore- (“ahead of, before”) + steall (“position”), equivalent to fore- + stall.

From Middle English forstal, from Old English foresteall (“an intervention, hindrance (of justice), ambush, assault, offence of waylaying on the highway, fine for such an offence, resistance, opposition”), equivalent to fore- + stall.