junior Definition

junior
adj

1a. Low or lower in rank;

Thesaurus: subordinate, lesser, inferior, minor, secondary, subsidiary, puisne; Antonym: senior.
Form: junior to someone (often)
1b. Younger.

Form: junior to someone (often)
2. Relating or belonging to, or for, schoolchildren aged between 7 and 11.

Example: junior schools
3. Used after the name of a person with the same name as their parents: younger.

noun

1. A person of low or lower rank in a profession, organization, etc.
2. A pupil in a junior school.
(N Amer, especially US)
3. A third-year college or high-school student.
4. A person younger than the one in question.

Example: She's three years his junior
(N Amer, especially US)
5. A name used to address or refer to the son of a family.

Form: Junior (often)

Etymology: 16c: Latin, meaning ‘younger'.