Answer: feud

AnswerCrossword Clue
FEUDLongstanding quarrel
FEUDLongstanding animosity
FEUDBig quarrel
FEUDInterclan hostilities
FEUD"Family ..." (Game Show Network rerun)
FEUDBitter squabble
FEUDHatfield-McCoy relationship
FEUDOngoing hostility
FEUDFight between families
FEUDBitter quarrel
FEUDFamily versus family
FEUDClash
FEUDHatfield-McCoy conflict, for one
FEUDOngoing argument
FEUDDeep-rooted dispute
FEUDClan vs. clan fight
FEUDDecades-old dispute
FEUDTV's "Family ..."
FEUDExtended hostility
FEUDMccoy-Hatfield battle, e.g.
feudto engage in a persistent state of private enmity
FEUDClan vs. clan
FEUD"Family ...."
FEUDTV's "Family....."
FEUDConflict
FEUDFamily against family
FEUDProlonged hostility
FEUDVendetta
FEUDLongtime antagonism
FEUDFamily problem
FEUDClash of clans
FEUDThe Hatfield-McCoy ..
FEUDOngoing conflict
FEUDGenerations-long dispute
FEUDClan intermarriage preventer
FEUDDispute
FEUDFamily fight
FEUDFamily hostility
FEUDBad-blood situation
FEUDFamily-vs.-family fight