challenge, pick a fight with, take on, confront

fight, war, battle

to fight, battle, war

to squabble, quibble, start a fight, cause trouble

war, fight, battle

skirmish, clash, battle

front (also as in battle/military)

enmity; badness, a bad deed

relationship (of family, cousins, usually through grandparents), similarity; enmity, rivalry, hostility

attack, assault; loot; enmity

enmity, feud, animosity

enmity, feud, animosity