catastrophes Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. 1 a sudden and widespread disaster; 2 something that has failed Example Sentence The earthquake and the tsunami were both major catastrophes. Synonyms disaster; misfortune; calamity; fiasco Antonyms triumph Hear It! Say It! Write It! catastrophes Switch to cursive Start Share with your friends: