Denshi Jisho — Online Japanese dictionary

屋内 おくない indoor (court, pool, etc.)
Common word, Noun, No-adjective 
奥山 おくやま remote mountain; mountain recesses
Common word, Noun 
奥行 おくゆき depth; length
Common word, Noun 
怠る おこたる to be negligent in doing something; to shirk; to be off one's guard
Common word, Godan verb with ru ending, Transitive verb 
行い おこない deed; act; action; conduct; behavior; behaviour; asceticism
Common word, Irregular okurigana usage, Noun 
行う おこなう to perform; to do; to conduct oneself; to carry out
Common word, Godan verb with u ending, Transitive verb 
厳か おごそか austere; majestic; dignified; stately; awful; impressive
Common word, Na-adjective, Noun 
幼い おさない 1: very young;
2: childish; immature
Common word, Adjective 
幼子 おさなご infant; baby; little child
Common word, Noun 
押入 おしいれ closet
Common word, Noun 
押売 おしうり high-pressure salesmanship
Common word, Noun 
和尚 おしょう 1: (Honorific or respectful language) preceptor or high priest (esp. in Zen or Pure Land Buddhism);
2: second highest priestly rank in Buddhism;
3: monk (esp. the head monk of a temple);
4: master (of one's art, trade, etc.)
Common word, Noun 
汚職 おしょく corruption
Common word, Noun, No-adjective 
白粉 おしろい (face) powder
Common word, Noun 
陥る おちいる to fall; to trap; to cave in; to collapse
Common word, Godan verb with ru ending, Intransitive verb 
訪れ おとずれ 1: visit; call;
2: arrival (e.g. of spring); advent; coming; appearance;
3: news; tidings; word
Common word, Noun 
衰え おとろえ weakening; emaciation; decline
Common word, Noun 
驚き おどろき surprise; astonishment; wonder
Common word, Noun 
驚く おどろく to be surprised; to be astonished
Common word, Godan verb with ku ending, Intransitive verb 
各々 おのおの each; every; either; respectively; severally
Common word, Temporal noun 
各各 おのおの each; every; either; respectively; severally
Common word, Temporal noun 
お袋 おふくろ one's mother
Common word, Noun, Colloquialism, Usually written using kana alone 
面影 おもかげ face; looks; vestiges; trace
Common word, Noun 
面白 おもしろ amusing; interesting
Common word, Noun or verb acting prenominally 
玩具 おもちゃ toy
Common word, Noun, Usually written using kana alone 
趣き おもむき 1: meaning; tenor; gist;
2: effect; influence;
3: appearance; aspect;
4: taste;
5: grace; charm; refinement
Common word, Irregular okurigana usage, Noun 

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