low-key Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. not attracting attention or showing off. Example Sentence The singer was low-key and not at all flashy. Spelled with a hyphen. More Example Sentences His low-key style is very appealing. Synonyms subdued; understated; calm Antonyms flashy; showy; loud Hear It! Say It! Write It! low-key Switch to cursive Start Share with your friends: