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