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junior (EN)
adjective, noun

adjective “junior”

base form junior (more/most)
  1. lower in rank or position
    He was promoted from a junior clerk to a senior manager.
  2. used in sports for people under a specific age
    She participated in the junior championship.
  3. (US) relating to the third year of high school or college
    She is excited about her junior year abroad.

noun “junior”

singular junior, plural juniors
  1. (US) a student in the third year of high school or college
    As a junior, he finally declared his major in physics.
  2. a child who goes to junior school
    He'll become a junior next year when he turns 8.
  3. an employee without any experience
    The task would be too difficult for a junior.
  4. the word added after a son's name when he has the same name as his father
    William Jones Junior followed his father into law.
  5. a general word for one's young son
    Can I leave junior with you?