From Longman Dictionary of Contemporary Englishleave somebody/something aloneleave somebody/something alonea) INTERFEREto stop annoying or upsetting someone Oh, just leave me alone, will you? Leave the boy alone, he can make up his own mind. b) to go away from someone so that they are on their own Six-year-old Gemma had been left alone in the house. c) to stop touching something Leave that alone. You’ll break it. d) (also leave well (enough) alone) to stop being involved in or trying to change a situation Why can’t they just leave well alone and let us concentrate on teaching? → leave