For a person:
* Louche: This is the most common translation, meaning "shady" in the sense of being suspicious or dishonest.
* Suspect: This is a more literal translation, meaning "suspicious" or "questionable."
* Clandestin: This refers to something being secretive or hidden.
For a place:
* Sombre: This means "dark" or "gloomy," and can be used to describe a place that feels shady or dangerous.
* Malign: This means "malicious" or "harmful" and can be used to describe a place with a bad reputation.
For a situation:
* Louche: This can also be used to describe a situation that is suspicious or dishonest.
* Ambigu: This means "ambiguous" or "unclear" and can be used to describe a situation that is shady or confusing.
Example:
* "Le bar était un peu louche." (The bar was a bit shady.)
* "Il y a quelque chose de suspect dans son comportement." (There's something shady about his behavior.)
It's important to choose the right word depending on the context and nuance of what you want to convey.