lit. secretly crossing the Wei River 渭河[wèi hé] at Chencang (idiom, refers to a stratagem used by Liu Bang 劉邦|刘邦[liú bāng] in 206 BC against Xiang Yu 項羽|项羽[xiàng yǔ] of Chu)

暗中监视

àn zhōng jiān shì

to monitor secretly

暗锁

àn suǒ

built-in lock

明人不做暗事

míng rén bù zuò àn shì

an honest person does not act surreptitiously (idiom)

to hide

axillary furuncle

obscure

dim

to hint; to suggest

hidden loss (finance)

暗桩

àn zhuāng

submerged piles installed to prevent the passage of boats

暗能量

àn néng liàng

dark energy (astronomy)

to plot against

blind shaft

latent menstruation (TCM)

暗道

àn dào

secret passage; secret tunnel

暗箭

àn jiàn

attack by a hidden enemy; a stab in the back

think to oneself

all black, no daylight (idiom); a world without justice

暗里

àn li

privately; secretly; behind closed doors

暗绿柳莺

àn lǜ liǔ yīng

(bird species of China) greenish warbler (Phylloscopus trochiloides)

magazine

internal injury

dark; dim (light); dull (color); drab

暗绿背鸬鹚

àn lǜ bèi lú cí

(bird species of China) Japanese cormorant (Phalacrocorax capillatus)

暗色鸦雀

àn sè yā què

(bird species of China) grey-hooded parrotbill (Sinosuthora zappeyi)

暗胸朱雀

àn xiōng zhū què

(bird species of China) dark-breasted rosefinch (Procarduelis nipalensis)

to kill secretly

darkroom

code word

(poetic depiction of plum blossom)

to hint at

dusky

shadow; umbra

unlicensed (unregistered) prostitute

暗转

àn zhuǎn

(theater) blackout (e.g. at the end of a scene)

暗骂

àn mà

to curse under one's breath

gloom

open enquiries and secret search (idiom); to investigate openly and in secret

undercurrent

to imply

the dark side (of society etc)

暗黑破坏神

àn hēi pò huài shén

Diablo (video game series)

secretly

to agree implicitly

of great reputation but shallow in knowledge (idiom)

明枪易躲，暗箭难防

míng qiāng yì duǒ , àn jiàn nán fáng

lit. easy to dodge the spear in the open, hard to avoid a stab in the dark (idiom); it is hard to guard against secret conspiracies

(computing) Dark Web

secretly; inwardly; on the sly

dull gray

to renounce the dark and seek the light

underground river

inwardly

to be secretly in love with

柳暗花明

liǔ àn huā míng

lit. the willow trees make the shade, the flowers give the light (idiom); at one's darkest hour, a glimmer of hope

暗绿绣眼鸟

àn lǜ xiù yǎn niǎo

(bird species of China) Japanese white-eye (Zosterops japonicus)

暗灰鹃䴗

àn huī juān jú

(bird species of China) black-winged cuckooshrike (Coracina melaschistos)

to commit to memory

bunker

sealed pot calcination (TCM)

暗爽

àn shuǎng

to be secretly delighted

to assassinate

secret place

undercurrent

Dark Ages

hidden sentry post

míng qiāng hǎo duǒ , àn jiàn nán fáng

lit. easy to dodge the spear in the open, hard to avoid a stab in the dark (idiom); it is hard to guard against secret conspiracies

暗笑

àn xiào

laugh in (up) one's sleeve

murk

camera bag (for changing film)

兼听则明，偏信则暗

jiān tīng zé míng , piān xìn zé àn

listen to both sides and you will be enlightened; heed only one side and you will remain ignorant (idiom)

hidden smile

dark-line spectrum

secret agent

open enquiries and secret search (idiom); to investigate openly and in secret

头昏眼暗

tóu hūn yǎn àn

head spinning and eyes dark (idiom); dizzy

暗适应

àn shì yìng

(visual physiology) dark adaptation

明修栈道，暗渡陈仓

míng xiū zhàn dào , àn dù chén cāng

lit. repair the plank road by day while secretly crossing the Wei River 渭河[wèi hé] at Chencang (idiom, refers to a stratagem used by Liu Bang 劉邦|刘邦[liú bāng] in 206 BC against Xiang Yu 項羽|项羽[xiàng yǔ] of Chu)

concealed weapon

to cast pearls before swine (idiom)

hidden shoal

dark; dim