concertinaed Get Printable Handwriting (con-cer-ti-naed) 4 syllables Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. 1 to fold crush together or collapse in the manner of a concertina Example Sentence The car concertinaed when it hit the truck. Synonyms collapse; crush together; fold together Antonyms unbendable Hear It! Say It! Write It! concertinaed Switch to cursive Start Share with your friends: