unmark Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to remove a mark or indication from something. Example Sentence She used an eraser to unmark the incorrect answer. More Example Sentences Students can unmark their mistakes later. Synonyms erase; remove; delete Antonyms mark; label; signify Hear It! Say It! Write It! unmark Switch to cursive Start Share with your friends: