Meaning of 声濁訛 in Japanese

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Definition of 声濁訛

こえ(koe) 【声 ·聲】

にごる(nigoru) 【濁る】

(v5r, vi) to become muddy; to become cloudy; to get impure (of a liquid, gas, etc.)
to become dull (of a sound, color, etc.); to become hoarse
to become impure (of a heart, society, etc.); to be corrupted; to be polluted
to become voiced; to add voiced consonant marks →Related words: 濁り

なまり(namari) 【訛り ·訛】

(n) accent (of one's speech)
その男はドイツ語なまりの英語を話す。
The man speaks English with a German accent.
dialect; provincialism; patois
トムはいつもジョンの言葉のなまりを理由にからかう。
Tom always makes fun of John because of his dialect.
corrupted form (e.g. of word); mispronunciation