What is louche?

As an AI language model, I can give you the definition of the word "louche," which is an adjective that describes something or someone as disreputable, shady, or suspicious. For example, a person with a shady or questionable reputation can be described as louche. The term can also refer to things that may appear questionable, such as a suspicious-looking establishment or an off-putting activity. In some contexts, the term can also imply that something is sexually alluring but in an unconventional or morally ambiguous way.