Formal or literary term for mud, often used in written descriptions or elevated contexts rather than everyday speech.
After the rain, the road was muddy with mire.
muck soil
Compound of 泥 (でい, 'mud') and 土 (ど, 'earth, soil'). The reading でい for 泥 is a kan'on reading, and ど for 土 is a go-on reading.