jettisoned Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to throw away something from a ship or plane. Example Sentence I jettisoned my plans to wash the car when it started raining. More Example Sentences The crew decided to jettison the cargo. Synonyms discarded; abandoned; removed Antonyms retained; kept; maintained Hear It! Say It! Write It! jettisoned Switch to cursive Start Share with your friends: