Denshi Jisho — Online Japanese dictionary

閏年 うるうどし leap year
Common word, Noun, No-adjective, Usually written using kana alone 
運休 うんきゅう service suspended (e.g. trains)
Common word, Noun, Suru verb 
有給 ゆうきゅう salaried; with pay
Common word, Noun, No-adjective 
有償 ゆうしょう 1: compensation; consideration;
2: for profit; non-free;
3: onerous
Common word, Noun, No-adjective 
有料 ゆうりょう toll; fee; charge; admission-paid
Common word, Noun, No-adjective 
有力 ゆうりょく 1: influential; prominent;
2: strong; likely; plausible; potent
Common word, Na-adjective, Noun 
初冠 ういかぶり (Archaism) crowning a boy for the first time at a coming-of-age ceremony
Noun, Suru verb 
初冠 ういかむり (Archaism) crowning a boy for the first time at a coming-of-age ceremony
Noun, Suru verb 
茴香 ういきょう fennel; Foeniculum vulgare
Noun 
上左 うえひだり upper left (corner)
Noun 
魚心 うおごころ favor done for somebody
Noun 
ウ冠 ウかんむり "roof" kanji radical at top (radical 40)
Noun 
浮袋 うきぶくろ 1: swimming belt; swimming float; life buoy;
2: swim bladder; air bladder
Out-dated or obsolete kana, Noun 
鶯菜 うぐいすな young greens (of mizuna, Japanese mustard spinach, rape, etc.)
Noun 
兎網 うさぎあみ rabbit-catching net
Noun 
兎馬 うさぎうま donkey
Noun 
卯年 うさぎどし year of the hare; year of the rabbit
Noun 
兎耳 うさぎみみ long ears; gossiper
Noun 
潮汁 うしおじる thin soup of fish or shellfish boiled in seawater
Noun 
牛蛙 うしがえる American bullfrog (Lithobates catesbeianus)
Noun, Usually written using kana alone 
牛車 うしぐるま ox carriage (for Heian era nobles); oxcart
Noun 
牛突 うしつつき oxpecker
Noun, Usually written using kana alone 
後指 うしろゆび being talked about or backbitten
Noun 
後技 うしろわざ Aikido rear defence (defense)
Noun, Martial arts term 
氏上 うじのかみ head of a clan
Noun, Archaism 
氏宗 うじのかみ head of a clan
Noun, Archaism 

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