outbreaker Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a person or thing that breaks out. Example Sentence The outbreaker beat against the boat. More Example Sentences An outbreaker can change old ways. Synonyms breaker; disruptor; innovator Antonyms sand Hear It! Say It! Write It! outbreaker Switch to cursive Start Share with your friends: