out-of-date Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. no longer current or in style. Example Sentence The book is out-of-date. Spelled with hyphens. More Example Sentences Her clothes are out-of-date and unfashionable. Synonyms old-fashioned; outdated; obsolete Antonyms current; modern; new Hear It! Say It! Write It! out-of-date Switch to cursive Start Share with your friends: