Answer: undercutting

AnswerCrossword Clue
undercuttingCut or wear away the part below or under (something, esp. a cliff)
undercuttingWeaken; undermine
undercuttingCut away material to leave (a carved design) in relief
undercutting(in sports such as tennis or golf) Strike (a ball) with a chopping motion so as to give it backspin
undercuttingUNDERCUT, to cut under
undercuttingOffer goods or services at a lower price than (a competitor)