Denshi Jisho — Online Japanese dictionary

けんか quarrel; brawl; fight; squabble; scuffle
Common word, Noun, Suru verb 
けんぜん noisy; boisterous; lively
Taru-adjective, Adverb taking the 'to' particle 
けんそう tumult; great noise; clatter; hustle and bustle
Noun, Na-adjective 
けんそう tumult; great noise; clatter; hustle and bustle
Noun, Na-adjective 
けんでん spreading around (news, etc.); talking about widely
Noun, Suru verb 
しい やかましい 1: (Usually written using kana alone) noisy; boisterous;
2: strict; faultfinding; carping; fussy
Common word, Adjective 
嘩腰 けんかごし belligerent
Noun, No-adjective 
嘩沙汰 けんかざた beginning (developing into) a quarrel (a fight, an altercation)
Noun 
八釜しい やかましい 1: (Usually written using kana alone) noisy; boisterous;
2: strict; faultfinding; carping; fussy
Adjective 
しい かまびすしい (Usually written using kana alone) noisy; boisterous
Adjective 
嘩の尻 けんかのしり aftermath of a quarrel (failure)
Noun 
嘩早い けんかばやい quarrelsome
Adjective 
嘩別れ けんかわかれ (of a couple) fighting and splitting up
Noun 
嘩を売る けんかをうる to pick a fight
Expression, Godan verb with ru ending 
々諤々 けんけんがくがく tumultuous (with everyone voicing their opinions simultaneously); uproarious
Taru-adjective, Adverb taking the 'to' particle 
諤諤 けんけんがくがく tumultuous (with everyone voicing their opinions simultaneously); uproarious
Taru-adjective, Adverb taking the 'to' particle 
々囂々 けんけんごうごう 1: wild uproar; pandemonium; clamor of voices; tumult;
2: noisy; uproarious; clamorous
Noun, No-adjective, Taru-adjective, Adverb taking the 'to' particle 
囂囂 けんけんごうごう 1: wild uproar; pandemonium; clamor of voices; tumult;
2: noisy; uproarious; clamorous
Noun, No-adjective, Taru-adjective, Adverb taking the 'to' particle 
嘩両成敗 けんかりょうせいばい in a quarrel, both parties are to blame
Expression 

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