variant of 暗

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

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

to hint / to suggest / suggestion / hint

to be secretly in love with

shadow / umbra

Diablo (video game series)

secretly / inwardly

in the dark / in secret / on the sly / surreptitiously

to assassinate

to hide / to conceal

concealed weapon

(computing) Dark Web

inwardly / to oneself / secretly

subtle fragrance

dark / dim (light) / dull (color) / drab / (fig.) gloomy / bleak

secretly / inwardly / on the sly

to make secret inquiries / to investigate in secret

to imply / to suggest / to connote / implicit

undercurrent

secretly / inwardly

camera bellows / camera obscura

secret place

secret passage / secret tunnel

code word

undercurrent

to curse under one's breath / to grumble inaudibly

hidden smile / smirk / to rejoice covertly / secret satisfaction concerning one's evil plans

underground river

internal (invisible) injury (damage)

metaphor

to hint at / to imply / sth hidden

secret signal (sign) / countersign / password

hidden snap fastener (concealed behind a flap on a garment)

acne

laugh in (up) one's sleeve / snigger / snicker

covert activities (election rigging etc) / under-the-table manipulations / black operations

to commit to memory / secret mark

magazine / cassette

attack by a hidden enemy / a stab in the back

dark adaptation

to plot against

dark energy (astronomy)

to agree implicitly / of one mind / views coincide without a word exchanged

lit. secretly crossing the Wei River 渭河 at Chencang (idiom, refers to a stratagem used by Liu Bang 劉邦｜刘邦 in 206 BC against Xiang Yu 項羽｜项羽 of Chu) / fig. to feign one thing while doing another / to cheat under cover of a diversion

hidden sentry post

obscure / remaining unenlightened

think to oneself

hidden loss (finance)

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

to monitor secretly / to spy on

unlicensed (unregistered) prostitute

built-in lock

unmentionable disease / a disease one is ashamed of

secret agent / detective

submerged piles installed to prevent the passage of boats / (fig.) informer / spy

latent menstruation (TCM)

(poetic depiction of plum blossom)

submerged reef (rock)

darkroom

(theater) blackout (e.g. at the end of a scene) / (literary) to be promoted in rank secretly

bunker

to cast flirtatious glances at sb (idiom)

inner room

to kill secretly / to stab in the back

blind shaft / winze

hidden shoal

dark nebula (visible as a shadow, absorbing light from behind) / absorption nebula

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

submerged sandbank / submerged coral islet

dull (complexion)

veiled design incised in porcelain or woven in fabric

underground water channel / covered ditch / culvert

black-crowned night heron (Tw)

(bird species of China) Himalayan snowcock (Tetraogallus himalayensis)

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

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

open enquiries and secret search (idiom); to investigate openly and in secret / taking information from all sides

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

(bird species of China) dark-rumped swift (Apus acuticauda)

(bird species of China) rufescent prinia (Prinia rufescens)

axillary furuncle / armpit boil

sealed pot calcination (TCM)

secret mark

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

dark-line spectrum

whistle given as a secret signal

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

black-crowned night heron (Tw)

black-crowned night heron (Tw)

camera bag (for changing film)