earth-shattering Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. very surprising or shocking. Example Sentence The earthquake was earth-shattering. More Example Sentences Her earth-shattering discovery changed everything. Synonyms shocking; startling; amazing Antonyms unremarkable; dull; ordinary Hear It! Say It! Write It! earth-shattering Switch to cursive Start Share with your friends: