Something that is cold and dark, tomb-like evoking dread or solemnity is...
alkaline
sepulchral
choral
chrystalline
Something (usually, face expression) that is dreary, mournful, bleak and gloomy is also called...
anticlimactic
tremendous
transfixing
lugubrious
This adjective is great to describe shadowy and obscure surroundings a moody scene.
tenebrous
floaty
dazzling
oneiric
An adjective that relates to light and dark contrast is...
vivid
vigilant
chiaroscuro
stalwart
A remark / comment / humour that is sharply sarcastic is...
mordant
jubilant
cerebral
vivacious
A brooding, dark expression is...
robust
lush
saturnine
verdant
Subtly charming in an innocent way.
elusive
seraphic
winsome
tenacious
Transparently clear, either literally or metaphorically
Oblique
Effervescent
Pellucid
Murmurous
Whispering or rustling softly (e.g. leaves, water, wind)
misty
susurrant
enigmatic
magnetic
Sticky or clingy - both physically and emotionally
guttural
viscid
stridulant
gleaming
Tall, slender and graceful in motion.
willowy
lissom
assertive
indomitable
Smoothly charming.
unflappable
suave
mercurial
amorphous
Detached, drifting, without anchor - physically or emotionally
unmoored
clandestine
liminal
diaphanous
Able to change form easily; adaptable and elusive.
Convalescent
Abysmal
Intricate
Protean
