COBUILD Advanced British English Dictionary1. adjective [ADJ n]Something that is snotty produces or is covered in snot. [informal, rude] ⇒ He suffered from a snotty nose, runny eyes and a slight cough.2. graded adjective & adjectiveIf you describe someone as snotty, you disapprove of them because they have a very proud and superior attitude to other people. [informal, disapproval] ⇒ ...snotty college kids. ⇒ She smiled a snotty smile.