Synonyms for Knock-down-drag-out:

• n.

  •fracas (noun)
  • dispute,
  • run-in,
  • squabble,
  • scuffle,
  • brawl,
  • rumpus,
  • ruction,
  • altercation,
  • donnybrook,
  • broil,
  • trouble,
  • quarrel,
  • mix up,
  • battle royal,
  • brouhaha,
  • riot,
  • uproar,
  • stew,
  • fray,
  • flap,
  • affray,
  • battle,
  • tumult,
  • hassle,
  • feud,
  • bickering,
  • words,
  • ruffle.
  •imbroglio (noun)
  • entanglement,
  • embroilment,
  • quandary,
  • involvement,
  • soap opera,
  • complication,
  • complexity,
  • falling-out,
  • argument,
  • embarrassment,
  • spat.
  •row (noun)
  • fuss,
  • reprimand,
  • racket,
  • castigation,
  • noise,
  • scrap,
  • reproof,
  • disturbance,
  • tiff,
  • tongue-lashing,
  • controversy,
  • wrangle,
  • lecture,
  • commotion.

• Other synonyms:

  •n.
  • flack,
  • fracas,
  • free-for-all,
  • imbroglio,
  • melee,
  • miff,
  • row,
  • scrimmage,
  • set-to,
  • talking to,
  • flacks,
  • shouting match,
  • telling-off,
  • bickerings,
  • set to,
  • setto,
  • talking-to.

Antonyms for Knock-down-drag-out:

• n.

  • fracas
    calm, agreement, happiness, harmony, peace.
  • imbroglio
    simplicity, peacemaking, ease.
  • row
    order, calmness, quiet, silence, tranquility.