(comparable) Low in rank; having a subordinate role, job, or situation. / (not comparable, often preceded by a possessive adjective or a possessive form of a noun) Younger.

A younger person. / A name suffix used after a son's name when his father has the same name (abbreviations: Jnr., Jr., Jun.).

plural of junior

The quality or state of being junior.

A town in West Virginia. / A male given name.

plural of juniority

juniority

(US, humorous, rare) A tendency of juniors in high school to slack off as if they were seniors with senioritis.

plural of juniorate

(religion) A secondary school for young people planning to enter religious life.