keep up Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. 1 to maintain prices or one's morale at the present level; 2 to maintain a pace or rate set by another; 3 to maintain in good condition Example Sentence Keep up the good work! Synonyms maintain; sustain; continue Antonyms let go; neglect Hear It! Say It! Write It! keep up Switch to cursive Start Share with your friends: