Denshi Jisho — Online Japanese dictionary

1: sound; noise; report;
2: note (music)
Common word, Noun, Noun suffix 
おと 1: sound; noise; report;
2: note (music);
3: fame
Common word, Noun, Noun suffix 
おん 1: sound; noise; report;
2: note (music);
3: Chinese-derived character reading
Common word, Noun, Noun suffix 
おんち 1: tone-deafness; amusia; having no ear for music;
2: (Na-adjective) tone-deaf; off-key;
3: (Suffix) having no sense (of something); being hopeless (when it comes to something)
Common word, Noun, No-adjective 
おんど 1: leading a group of people; someone who leads others into a song by singing the leading notes;
2: workmen's songs; marching songs
Common word, Noun 
おんぷ 1: musical note; note symbol;
2: phonetic symbol (inc. the kanji and kana-doubling symbols, vowel-lengthening symbol, etc.);
3: part of a kanji for which the role is primarily to represent the pronunciation (as opposed to the meaning)
Common word, Noun 
ねいろ 1: tone color; tone colour; tone quality; timbre;
2: synthesizer patch; synthesiser patch
Common word, Noun, No-adjective 
ほんね real intention; motive
Common word, Noun 
ぼいん vowel
Common word, Noun, No-adjective, Linguistic term 
よわね complaints
Common word, Noun 
いおん 1: (Linguistic term) allophone;
2: strange noise
Noun 
おんか phonetic value
Noun 
おんが 1: Tonmalerei (musical imagery);
2: sound film
Noun 
おんぎ kanji reading and meaning
Noun 
おんさ tuning fork
Noun 
おんさ tuning fork
Noun 
おんし tone poem
Noun 
おんじ syllabary; phonetic symbol
Noun 
おんず phonetic table (esp. that of Japanese)
Noun 
おんそ phoneme
Noun, No-adjective, Linguistic term 
おんと voice
Noun 
おんぱ sound wave
Noun, No-adjective 
おんぷ music; notes; notation
Noun 
かおん accent
Noun 
きおん fundamental tone (note); keynote
Noun 
ぎおん imitative sounds (drama, broadcasting)
Noun, No-adjective 

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