暗地里

secretly / inwardly / on the sly

variant of 裡|里[li3]

lining / interior / inside / internal / also written 裏|里[li3]

li, ancient measure of length, approx. 500 m / neighborhood / ancient administrative unit of 25 families / (Tw) borough, administrative unit between the township 鎮|镇[zhen4] and neighborhood 鄰|邻[lin2] levels

-ly / structural particle: used before a verb or adjective, linking it to preceding modifying adverbial adjunct

earth / ground / field / place / land / CL:片[pian4]

variant of 暗[an4]

dark / gloomy / hidden / secret / muddled / obscure / in the dark

to close (a door) / to eclipse / muddled / stupid / ignorant / variant of 暗[an4]

secretly / inwardly