台Taivo A Taiwan Mandarin dictionary

泥濘

nínìng

ㄋㄧˊ ㄋㄧㄥˋ

Simplified 泥泞

Example

球隊已經訓練了幾天，所以這個足球場有些泥濘，不太好用了。

qiúduì yǐjīng xùnliàn le jǐtiān suǒyǐ zhège zúqiúcháng yǒuxiē nínìng bútàihǎo yòng le

Because it had been raining for a couple of days, the pitch was muddy and difficult to play on.

Keep 泥濘 and it comes back until you know it.