boosters Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. 1 someone who is an active supporter and advocate; 2 a device for increasing power; 3 the first stage of a multistage rocket Example Sentence The boosters raised money for the team. Synonyms supporter; backer; sponsor Antonyms opponent Hear It! Say It! Write It! boosters Switch to cursive Start Share with your friends:
