subj. Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition abbreviation for 'subject', often in grammar. Example Sentence The abbreviation for subject. subj. More Example Sentences Students learned about the subj. of verbs. Synonyms topic; theme; matter Antonyms abbreviation for Saturday Hear It! Say It! Write It! subj. Switch to cursive Start Share with your friends: