bad lot

plural bad lots

1. A bad person.

   But he's a bad lot, is the master — a thorough bad lot, take my word for it, and I'm one as knows him well — too well, by a deal.

   1875 October 16, Charles Dickens, “The Red House”, in All the Year Round

   1 more example

   “I went on, ‘I’m going to warn you, whether you like it or not. That man would as soon murder you in your bed as look at you. He’s a bad lot. You can say what you like to me, but remember what I’ve told you. He’s a bad lot!’”

   1920, Agatha Christie, The Mysterious Affair at Styles, London: Pan Books, published 1954, page 15