1. to become muddy, to become cloudy, to become turbid, to become impure (of a liquid or gas)

Godan verb with 'ru' ending intransitive verb

2. to become dull (of a sound, color, etc.), to become indistinct, to become fuzzy, to become hoarse

Godan verb with 'ru' ending intransitive verb

3. to become impure (of one's heart, a society, etc.), to be corrupted, to be polluted

intransitive verb Godan verb with 'ru' ending

4. to become voiced (of a consonant), to be pronounced as a voiced sound

intransitive verb Godan verb with 'ru' ending