upends Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to turn something upside down or reverse it. Example Sentence The strong wind upends the umbrella. More Example Sentences He upends the cup to pour out juice. Synonyms overturn; invert; flip Antonyms stabilize; steady; balance Hear It! Say It! Write It! upends Switch to cursive Start Share with your friends: