shady

1. (informal) Not trustworthy; disreputable.Examples: "He is a shady character."; "No sunshine in my life, the way I deal is shady"; "Jon & Kate Plus 8 is a show based on two facts: 1) Jon and Kate Gosselin have eight children, and 2) the word ‘Kate’ rhymes with the word ‘eight’. One suspects that if Kate were ever to have another child, a shady network executive would urge her to put it in a binbag with a brick and drop it down a well. But this is just a horrifying tangent."Synonyms: corrupt, dodgy, dubious, equivocal, seedy, sketchy, suspiciousinformal

2. (UK, slang) Mean, cruel.Examples: "They were being proper shady to him. Even if you don't like someone, locking them out, stealing their clothes and ganging up on them to take the piss is just childish."; "I didn't even ask her to be in the 'Increase the Peace' campaign, which was well shady, 'cos if anyone knows anything about rudes and violence and getting dragged into stuff it's Uma."; ""Don't be shady," she said, "You know I always pay up.""UKslang