Grade 5 junior Get Printable Handwriting (jun-ior) 2 syllables Rhymes Learn It! Spelling Test Definition noun. a thirdyear in high school or collegeadjective. younger or lower in rank Example Sentence My brother is a junior in high school. OR I play in the junior golf league. Synonyms third-year; younger; lower Antonyms senior Rhymes Two Syllable Rhymes (2) jr junior Share with your friends: