senior
senior — adjective
1. having a more important position or a higher level of authority than someone els
having a more important position or a higher level of authority than someone else in an organization or profession.
Jack was promoted to a senior position in the marketing department after just two years.
attributive use: senior + position/job noun
The senior staff at Eitan's company meet every Monday to discuss the weekly sales targets.
Élise is senior to Amira in the company, so she makes the final hiring decisions.
pattern: senior + to + [person]
Only senior officers can approve expenses above five thousand dollars.
- senior position
- senior staff
- senior officer
- senior manager
- senior partner
- senior executive
- higher-ranking
more direct and less formal; used mainly for positions in hierarchies
- superior
stronger emphasis on authority; can sound more formal or judgmental
- chief
suggests the highest role; used for titles like chief executive or chief officer
- junior
lower in rank or position; the direct counterpart
- subordinate
formal term for someone lower in a hierarchy
Grammar Patterns
senior + noun
senior + to + noun
Usage Note
Often used as an attributive adjective before a job title or category. When comparing two people, the pattern 'senior to [someone]' is used instead of 'senior than'.
Common Mistakes
2. having been a member of a group for a long time, so that you know the work or ac
having been a member of a group for a long time, so that you know the work or activity well because of your experience.
As a senior member of the sales team, Jiwoo helps train the newer employees.
collocation: senior member of [group]
Maja is a senior nurse at the hospital with over fifteen years of experience.
Kofi, a senior player, spent extra time helping the younger forwards improve their shooting.
Lakan's role as a senior developer includes reviewing code written by the newer team members.
senior developer = experienced developer
- senior member
- senior player
- senior nurse
- senior colleague
- experienced
broader meaning, not limited to groups; less formal
- veteran
strong connotation of long service; often used for soldiers, athletes, or professionals
- long-serving
emphasizes duration rather than skill gained
Grammar Patterns
senior + noun (role/member)
Usage Note
Unlike sense 1 (HIGHER RANK), this sense emphasizes experience and tenure rather than formal authority. The person may not be anyone's boss but is respected for having been around longer.
3. having lived for a greater number of years; older than another person, especiall
having lived for a greater number of years; older than another person, especially within a family or community.
Senior students at Yuki's school helped the new seventh-graders find their classrooms on the first day.
senior students = older students
Nikhil visits his senior relatives every weekend and helps them with their groceries.
The senior residents at Amelia's community center meet every Friday for board games and tea.
senior residents = older residents of a community
Ziad joined a club for senior residents of the neighborhood to meet new friends.
- senior student
- senior relative
- senior resident
- senior member of the community
Grammar Patterns
senior + noun (family/group)
Usage Note
In British English 'senior' as a simple age marker is less common in everyday speech; 'older' is preferred. The sense survives in fixed expressions like 'senior citizens' and in family references such as 'senior brother' (common in Indian, African, and East Asian English).
Common Mistakes
4. written after someone's full name to indicate that they are the elder of two fam
written after someone's full name to indicate that they are the elder of two family members with the same name, typically a father and his son.
William Senior still lives in the house where his son William Junior grew up.
pattern: [First Name] + Senior vs Junior
The invitation was addressed to David Chen Senior, not his grandson of the same name.
Jorge Santos Senior has a grandson named Jorge Santos Junior, and both share the same family name.
Pass this package to Mr. Kim Senior when you see him at dinner.
- the elder
more formal and less common; used in historical contexts ('Pliny the Elder')
- Junior
used after the name of the younger relative (often abbreviated as Jr.)
- the younger
formal alternative to Junior
Grammar Patterns
Name + Senior
Usage Note
Always placed after the full name and usually capitalized. In writing it is often abbreviated as 'Sr.' (e.g., 'Martin Luther King Sr.'). This usage is most common in American and Canadian English.
Common Mistakes
5. made for or connected with people in their later years, particularly those who a
made for or connected with people in their later years, particularly those who are no longer employed.
The supermarket offers a ten percent discount for senior customers every Tuesday.
collocation: senior discount / senior customer
Amira volunteers at a senior center where she reads books to the residents.
collocation: senior center / senior residence
Many senior citizens join walking groups to stay active and make new friends.
The city built a new senior housing complex near the park and the library.
- senior citizen
- senior center
- senior discount
- senior housing
- senior community
- elderly
more direct about advanced age; slightly less formal than 'senior'
- retirement
focuses on the post-work stage rather than age itself
- youth
relating to young people; opposite end of the age spectrum
Grammar Patterns
senior + noun (service/facility/discount)
Usage Note
The noun phrase 'senior citizen' is the most common full form. 'Senior' alone before a noun (senior discount, senior housing) is a shortened version. This sense is polite and respectful, unlike some older terms for elderly people.
Common Mistakes
❌ 'Senior citizen discount' is sometimes shortened to 'senior discount' in casual speech — this is acceptable, not a mistake.
6. relating to the final year of study at a high school, college, or university.
relating to the final year of study at a high school, college, or university.
Hugo is taking his senior exams next month and feels quite nervous about them.
US: senior exams / senior year
The senior class at Westlake High plans a trip to the coast in spring.
Ryan spent his senior year of college writing a research paper about ocean pollution.
pattern: senior year of + [school/college]
Senior prom is one of the most memorable events for students completing high school.
- senior year
- senior class
- senior student
- senior prom
- senior project
- final-year
used in British English and other varieties; neutral and widely understood
- graduating
focuses on the completion of studies rather than the year itself
- freshman
first-year student; beginning of the school journey
- first-year
the opposite end of the school timeline
Grammar Patterns
senior + noun (year/class/student)
Usage Note
This sense is primarily used in the United States and Canada. In the US school system, grade 12 is 'senior year' of high school, and the fourth year of a four-year college degree is 'senior year' of college.
Common Mistakes
senior — noun
1. a person who holds a more important position or a higher rank in an organization
a person who holds a more important position or a higher rank in an organization than the person speaking or being referred to.
Noa reported the problem to her senior, who promised to investigate it immediately.
countable: a senior = higher-ranking person
The juniors in the office respect their seniors and often ask them for career advice.
Each new employee is paired with a senior who helps them learn the company systems.
paired with a senior = mentor/buddy system
Reuben asked two seniors in his department to review his project plan before the client meeting.
- my senior
- your senior
- report to a senior
- consult a senior
- junior
a person with lower rank or less experience
- subordinate
formal term for someone lower in the hierarchy
Grammar Patterns
someone's senior
the senior + preposition
Usage Note
Commonly used with a possessive determiner ('my senior', 'her senior', 'the juniors' seniors'). Can also be used without a possessor in contexts of institutional hierarchy ('consult your seniors').
2. someone who is a certain number of years older than another person, used to desc
someone who is a certain number of years older than another person, used to describe the age gap between two people.
Trang is ten years Jack's senior, but they get along very well as colleagues.
pattern: [number] years + [possessive] + senior
Jiwoo's husband is eight years her senior, and they met while traveling in Vietnam.
pattern: [number] years + pronoun + senior
The new manager is twenty years the owner's senior and brings decades of experience.
Although Renata is only three years my senior, she has always given me wise advice.
- years someone's senior
- my senior
- her senior
- older
simpler and more common in everyday speech; works without an age number
- junior
used in the same pattern: 'five years my junior' means five years younger
Grammar Patterns
[number] years + possessive + senior
Usage Note
This sense always appears in the construction '[number] years someone's senior'. The number can be approximate ('about ten years my senior') or exact. It cannot stand alone without the age-difference expression.
Common Mistakes
3. an older person, especially one who has stopped working and is aged 65 or over.
an older person, especially one who has stopped working and is aged 65 or over.
The community center offers free yoga classes for seniors every Saturday morning.
seniors = older people, senior citizens
Dewi organized a bus trip for seniors to visit the national park during the spring bloom.
The local library runs a book club specifically for seniors who enjoy reading fiction.
Nikhil visits the seniors at the care home every Sunday afternoon to play chess.
- discount for seniors
- programs for seniors
- seniors' center
- services for seniors
- senior citizen
full form; slightly more formal and explicit
- pensioner
used in British English; focuses on the person receiving a pension
- older adult
neutral and respectful; commonly used in healthcare contexts
- young person
someone who is young; the opposite demographic
- youth
a young person, especially a teenager or young adult
Usage Note
Considered a polite and respectful term. 'Senior' as a noun is more common in official and service contexts (discounts, housing, programs) than in personal family references. For family members, 'grandparent' or 'elderly relative' is more natural.
4. a learner who is in the last twelve months of secondary school or higher educati
a learner who is in the last twelve months of secondary school or higher education, a label commonly used in the US education system.
The seniors at Lincoln High School are preparing their applications for college now.
senior = final-year student
Maja is a senior at Seoul National University, majoring in computer science.
Each senior in the program must complete a final project before graduating in June.
The seniors decorated the school gym and threw a farewell party before final exams began.
- high school senior
- college senior
- senior class
- fellow seniors
- final-year student
used in British English and other education systems
- graduating student
focuses on the imminent completion of studies
- freshman
first-year student; beginning of the school journey
- first-year student
the opposite end of the study timeline
Usage Note
In order of school years, the US progression is: freshman (9th grade / 1st year), sophomore (10th / 2nd), junior (11th / 3rd), senior (12th / 4th). In British English, 'final-year student' or 'Year 13 student' is used instead.
Common Mistakes
5. the status of having a right to be paid or treated before other claimants, used
the status of having a right to be paid or treated before other claimants, used especially in finance and law.
When the retailer went bankrupt, senior debt holders were paid before the regular suppliers.
finance: senior debt / senior claim
When the construction firm defaulted, senior bondholders were the first to get their money back.
A senior lien on the house means the bank gets repaid before other creditors.
The loan agreement gives the bank senior status over other creditors in the payment order.
formal: senior status = priority position
- senior debt
- senior bondholder
- senior creditor
- senior lien
- priority
more general term; 'senior' in this context is the specific legal term for having priority
- preferential
used in 'preferential creditor' contexts; similar meaning
- subordinated
having lower priority; paid after senior claimants
- junior
used for debt that ranks below senior debt
Grammar Patterns
senior + noun (debt/bond/claim/lien)
Usage Note
This is a technical financial/legal sense. It appears in compound terms like 'senior debt', 'senior bond', 'senior lien', or 'senior creditor'. The opposite is 'junior' or 'subordinated' debt.
Word family
- senioritynounB2
Synonym discussion
Sense: adjective/1
These words all describe someone with a more important position, but they differ in nuance and use. 'Senior' is the most neutral term; it focuses on rank within an organization without suggesting dominance — a senior manager may have authority over certain decisions but still report to someone else. 'Superior' carries a stronger sense of hierarchy and can sound more formal or even judgmental (e.g., 'my superior officer'). 'Higher-ranking' is a straightforward, slightly more explicit way to describe position; it is commonly used in military and bureaucratic contexts ('higher-ranking officials'). 'Chief' implies the highest role within a group or function — a chief executive is at the very top, whereas a senior executive is one of several high-level leaders. In everyday conversation, 'senior' is the safest choice for workplace hierarchies: 'The senior engineers reviewed the proposal.' If you want to emphasize formal authority, use 'superior'; for the topmost role, use 'chief'.
Common collocations
Etymology
The word 'senior' comes from Latin 'senior', which is the comparative form of 'senex' meaning 'old' or 'aged'. It entered English through Old French 'seniour' around the 14th century. Originally used simply to mean 'older', it gradually developed its sense of higher rank by the 15th–16th centuries, as older members of professions or communities naturally held more authority. The use as a suffix for the older of two same-name relatives (e.g., 'John Smith Sr.') became common in 17th-century English. The financial sense of having priority (senior debt) developed in the 19th century with modern banking systems.