Grade 1 den Get Printable Handwriting (Den) 1 syllables Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a small room or hideout used for relaxation or work. Example Sentence We like to play in the den. More Example Sentences He has a cozy den for reading books. Synonyms lair; hideout; retreat Antonyms out in the open Hear It! Say It! Write It! den Switch to cursive Start Share with your friends: