attagirl Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition interjection. a term of encouragement for a girl or woman. Example Sentence You really outdid yourself on that presentation, attagirl. More Example Sentences An attagirl can boost someone's confidence. Synonyms well done; good job; great work Antonyms that's wrong; not good Hear It! Say It! Write It! attagirl Switch to cursive Start Share with your friends: