colourless Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. weak or without the visual attributes that result from the light an object emits or transmits or reflects Chiefly British. Example Sentence The black and white photograph was colourless. Synonyms dull; neutral; pale Antonyms bright Hear It! Say It! Write It! colourless Switch to cursive Start Share with your friends: