stand up Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. 1 rise to one's feet; 2 refuse to back down; 3 put into an upright position; 4 defend against attack or criticism Example Sentence I stand up and walk to the teacher. Synonyms rise; arise; get up Antonyms sit down Hear It! Say It! Write It! stand up Switch to cursive Start Share with your friends: