mistreated Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. treated badly or unfairly. Example Sentence He mistreated his dog until it bit him. More Example Sentences Children should never be mistreated at school. Synonyms abused; wronged; harmed Antonyms treated well; cared for; supported Hear It! Say It! Write It! mistreated Switch to cursive Start Share with your friends: