1
: a person older than another
five years my senior
2
a
: a person with higher standing or rank
b
: a senior fellow of a college at an English university
c
: a student in the year preceding graduation from a school of secondary or higher level
3
Senior
: a member of a program of the Girl Scouts for girls in the 9th through 12th grades in school
4
1
: of prior birth, establishment, or enrollment
—often used to distinguish a father with the same given name as his son
2
: higher ranking : superior
senior officers
3
: of, relating to, or intended for seniors
a senior center
4
: having a claim on corporate assets and income prior to other securities
Synonyms of senior
Relevance
Noun
Adjective
Examples of senior in a Sentence
Noun
As his senior, she commanded quite a bit of respect.
She was his senior in rank.
high school juniors and seniors
Adjective
the senior vice president of marketing
She is a senior aide to the president.
a senior editor for the magazine
He recently became a senior partner in the accounting firm.
the men's senior baseball league
Recent Examples on the Web
Laura Horne, Charlotte Observer, 16 June 2026
Lawmakers also appropriated $143 million to the healthcare program for undocumented immigrant seniors and $4 million for welcoming centers that provide services to immigrants arriving in Illinois.
—Ben Szalinski, CBS News, 16 June 2026
Francesca Chambers, USA Today, 18 June 2026
The study also found that the more advanced group over-indexed on senior leadership sponsorship, training and change management, and data preparation and labeling—all by at least 10 percentage points.
—John Kell, Fortune, 17 June 2026
See All Example Sentences for senior
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Noun
In 2024, its inaugural year, Ballantyne Ridge had no seniors.
—Laura Horne, Charlotte Observer, 16 June 2026
Lawmakers also appropriated $143 million to the healthcare program for undocumented immigrant seniors and $4 million for welcoming centers that provide services to immigrants arriving in Illinois.
—Ben Szalinski, CBS News, 16 June 2026
Adjective
The text of the 14-point agreement was read by a senior administration official in a call with reporters on Wednesday.
—Francesca Chambers, USA Today, 18 June 2026
The study also found that the more advanced group over-indexed on senior leadership sponsorship, training and change management, and data preparation and labeling—all by at least 10 percentage points.
—John Kell, Fortune, 17 June 2026
See All Example Sentences for senior
Cite this Entry
“Senior.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/senior. Accessed 19 Jun. 2026.
Copy CitationKids Definition
senior
1 of 2 noun
se·nior
ˈsē-nyər 
1
: a person who is older than another
five years my senior
2
a
: a person with higher standing or rank
b
: a student in the final year of high school or college
senior
2 of 2 adjective1
: being older
—used to distinguish a father from a son with the same name
John Doe, Senior
2
: higher ranking
senior officers
the senior partner of the law firm
3
: of or relating to seniors in an educational institution
the senior class
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