downburst Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a strong downdraft of air that causes damaging winds on the ground. Example Sentence A downburst can produce effects that resemble those of a tornado. More Example Sentences The storm produced a powerful downburst. Synonyms downdraft; wind shear Antonyms stillness Hear It! Say It! Write It! downburst Switch to cursive Start Share with your friends: