low-grade Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. of inferior quality or low standard. Example Sentence The mine yields low-grade silver ore. More Example Sentences He bought low-grade materials for the project. Synonyms poor; substandard; inferior Antonyms high-grade; excellent; superior Hear It! Say It! Write It! low-grade Switch to cursive Start Share with your friends: