淤滞 Traditional form: 淤滯 Pinyin (reading): yūzhì Definitions: silted up obstructed by silt variant of 瘀滯/瘀滞 (yūzhì) Characters: 淤 - mud, sediment; to clog up, to silt up 滞 - to block, to obstruct; sluggish, stagnant Traditional characters: 淤 - mud, sediment; to clog up, to silt up 滯 - to block, to obstruct; sluggish, stagnant