獐头鼠目

zhāng tóu shǔ mù

lit. the head of a river deer and the eyes of a rat (idiom)

fig. repulsively ugly and shifty-looking

獐

zhāng

variant of 獐[zhang1]

头

tóu

head

鼠

shǔ

(bound form) rat; mouse

目

mù

eye