Denshi Jisho — Online Japanese dictionary

往航 うこう outward voyage
Noun 
横坑 うこう adit
Irregular kana usage, Noun 
王公 うこう king and princes; noble rank
Noun 
王后 うこう queen
Noun 
殴殺 うさつ beating to death; striking dead
Noun, Suru verb 
鏖殺 うさつ massacre; extermination
Noun, Suru verb 
黄鐘 うしき (in Japan) 8th note of the ancient chromatic scale (approx. A)
Noun 
応手 うしゅ (primarily in shogi or go) response; countermeasure; counter-measure
Noun 
黄酒 うしゅ huangjiu (undistilled Chinese alcohol, made of fermented grains)
Noun, Usually written using kana alone 
凹所 うしょ concavity; hollow; depression
Noun 
往信 うしん first half of a reply card
Noun 
往日 うじつ ancient times
Noun 
王蛇 うじゃ boa
Noun 
応需 うじゅ responding to a demand; answering a request
Noun, Suru verb 
應需 うじゅ responding to a demand; answering a request
Out-dated kanji, Noun, Suru verb 
皇女 うじょ imperial princess
Noun 
応身 うじん nirmanakaya (response body, form taken by a buddha according to the capabilities of those who are to be saved)
Noun, Buddhist term 
黄人 うじん yellow race
Noun 
王水 うすい aqua regia
Noun 
黄水 うすい bile; gall
Noun 
旺盛 うせい full of vim and vigor
Na-adjective, Noun 
王制 うせい monarchical system
Noun 
王婿 うせい prince consort
Noun 
王政 うせい monarchy; imperial rule
Noun 
往昔 うせき ancient times
Noun 
応戦 うせん accepting a challenge; returning fire; fighting back; putting up a fight; responding to an attack
Noun, Suru verb 

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