Restrained, subtle, not trying to attract attention.
Dark; characterised by dark tones and muted colours.
Kind of.
In a low-key or surreptitious manner; secretively; on the down-low.
Stinging; acerbic.
Having a sharp and stiff point.
Having a strong odor that stings the nose, said especially of acidic or spicy substances.
Having a strong taste that stings the tongue, said especially of hot (spicy) food, which has a strong and sharp or bitter taste.