0 not completely moral or honest, often in an attractive way:
A louche young man approached her on the dance floor.
I do not much like this word "sovereignty," it is a louche expression, which everybody can interpret in different ways.
Antimony trichloride has also been used to enhance the louche effect in absinthe.
Both turn white when poured over ice or mixed with water (the louche), and form small crystals when frozen.
This procedure produces a minor simulation of the louche that is seen in traditional absinthe, and the low water-to-alcohol ratio increases the strength of the resulting drink.
Between 1827 and 1832, he produced several albums of lithographs, satirising the mores and physiognomies of his contemporaries and of the grisettes (or louche young men) in his office.