booter Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a person or thing that starts something. Example Sentence He is a powerful booter on the soccer team. More Example Sentences He is a booter for the project. Synonyms starter; initiator; launcher Antonyms catcher; receiver Hear It! Say It! Write It! booter Switch to cursive Start Share with your friends: