louche \LOOSH\, adjective:
Of questionable taste or morality; disreputable or indecent;
You’ve got to keep yourself free of any suggestion of
A man in a bar, utterly average, though there is something
louche about him, something sly.
–Andrew Holleran, In September, the Light Changes
Danny would be sipping a mai tai or a whiskey sour in some
louche West End club.
–Will Self, Tough, Tough Toys for Tough, Tough Boys
In the louche era of the Regency she was almost a portent
of the Victorian ideal to come; in an earlier age she might
have been a Puritan.
–Mary S. Lovell, Rebel Heart