Skip to content

What is age 40 called? Exploring the term for your fourth decade

3 min read

Did you know that the official term for someone in their 40s dates back to the 19th century and has Latin roots? Discover the surprisingly sophisticated answer to the question, What is age 40 called?, and what defines this pivotal decade of life.

Quick Summary

A person between the ages of 40 and 49 is formally known as a quadragenarian. While this Latin-derived term is rarely used in everyday conversation, it perfectly describes those experiencing the start of middle age.

Key Points

  • Official Term: A person in their 40s is called a quadragenarian.

  • Etymology: The term comes from the Latin quadrāgēnārius, meaning “consisting of forty.”

  • Common Usage: The term quadragenarian is rarely used in everyday speech; most people use 'middle age' or 'the forties' instead.

  • Middle Age Transition: This decade is often seen as the beginning of middle age, a time of reflection and re-evaluation.

  • Focus on Health: The forties are a critical time for focusing on preventative health, including diet, exercise, and stress management.

In This Article

The Official Term: Quadragenarian

The formal and official term for a person in their 40s is a quadragenarian. This word, which applies to anyone between the ages of 40 and 49, is derived from the Latin word quadrāgēnārius, meaning “consisting of forty.” While the term is largely absent from common speech, it is the correct and specific label for individuals in this age bracket, in line with terms used for other decades, like 'tricenarian' for someone in their 30s.

Unlike the more commonly used terms like 'septuagenarian' (70s) or 'octogenarian' (80s), 'quadragenarian' and its younger counterparts are not part of our everyday vocabulary. Most people instead refer to this period as simply "the forties" or the beginning of "middle age." However, understanding the precise terminology adds a layer of depth to the study of life stages and etymology.

More Common Descriptors: Middle Age and The Forties

In contemporary society, it is far more common to refer to a person turning 40 as entering "middle age." This broader and more colloquial term is widely understood and carries with it a different set of cultural connotations than the scientific 'quadragenarian.' Middle age is not a rigidly defined period, and its start and end points can be subjective, often influenced by societal norms and individual life paths.

For many, the forties mark a period of significant reflection and re-evaluation. With young adulthood behind them, individuals in this decade often find themselves assessing their career progress, family life, and personal goals. It's a time of finding balance between established responsibilities and the pursuit of new passions.

Navigating the Forties: A Decade of Growth and Change

The quadragenarian years are often characterized by a unique mix of stability and transition. For many, careers are well-established, and families are growing. At the same time, this decade can present new challenges, including shifting health needs, evolving family dynamics, and a re-evaluation of long-term life plans.

Health and Wellness in Your 40s

Health concerns can become more prominent during this time. Regular health check-ups and proactive wellness strategies become increasingly important. For many, this is the decade when they truly begin to focus on preventative care, including proper nutrition, regular exercise, and stress management. Maintaining physical and mental health during the quadragenarian years is critical for a smooth transition into later life.

Financial Planning and Career Growth

Professionally, the forties can be a period of peak performance and leadership. It is also a crucial time for financial planning, with a greater focus on retirement savings and securing one's financial future. Balancing current expenses with future planning is a key priority for many quadragenarians.

The “Mid-Life Crisis” Trope vs. Reality

The term "mid-life crisis" has become a cultural stereotype for the period of middle age. While some individuals may experience a sense of unrest or a desire for change, this is not a universal experience. Many quadragenarians report feelings of contentment and a heightened sense of purpose. The idea of a mid-life crisis is often exaggerated and doesn't reflect the complex, nuanced reality of most people's lives in their forties. Instead of a crisis, many see it as an opportunity for personal growth and recalibration.

Comparing Decadal Age Terms

Understanding the formal terms for each decade provides a fascinating glimpse into linguistic history. Here is a comparison of the Latin-derived terms for various age groups:

Decade Latin-derived Term Common Descriptor
10-19 Denarian Teenager, Youth
20-29 Vicenarian Twentysomething
30-39 Tricenarian Thirtysomething
40-49 Quadragenarian Middle-aged, Fortysomething
50-59 Quinquagenarian Fiftysomething, Middle-aged
60-69 Sexagenarian Senior, Sixtysomething
70-79 Septuagenarian Senior, Seventysomething
80-89 Octogenarian Senior, Eightysomething
90-99 Nonagenarian Senior, Ninetysomething
100+ Centenarian Centenarian

This table illustrates how while all decades have a formal title, only the terms for later life stages are frequently used. The transition from casual descriptors to formal ones reflects cultural attitudes toward aging.

Conclusion: Embracing the Quadragenarian Decade

So, what is age 40 called? The official answer is a quadragenarian, but it's really the experiences, wisdom, and personal growth that define this decade. Whether you refer to it by its formal name or simply as your forties, this period offers a unique time for both reflection and forward momentum. Focusing on health, well-being, and personal fulfillment can make this decade one of the most rewarding and purposeful of your life.

For more information on the terms for different decades of life, you can explore resources like the Merriam-Webster Dictionary.

Frequently Asked Questions

Age 40 and the entire decade from 40 to 49 is officially referred to as the quadragenarian years. The person themselves is a quadragenarian.

The word is derived from Latin, with quadrāgēnārius being the root. This is consistent with the naming convention for other decades, using Latin numerical prefixes.

Yes, it is very normal to feel a mix of emotions about turning 40. This is a significant milestone that often prompts reflection on life accomplishments and future goals. However, it is also a great opportunity for growth.

Health changes in your forties can vary widely, but some people may notice shifts in metabolism, energy levels, and vision. It's an important time to focus on preventative care and healthy habits to support future wellness.

Yes, 'middle age' is still a relevant and commonly used term, though its definition is somewhat fluid. It generally encompasses the decades from the forties through the sixties and reflects a life stage between young adulthood and old age.

The term quadragenarian is very uncommon in modern conversation. It is more of a technical or academic term, similar to how 'tricenarian' is used for someone in their 30s. Most people simply say 'in their forties'.

A quadragenarian is a person in their forties (40-49), while a quinquagenarian is a person in their fifties (50-59). The prefixes quadra- and quinqua- refer to the respective numbers in Latin.

References

  1. 1
  2. 2
  3. 3
  4. 4

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice. Always consult a qualified healthcare provider regarding personal health decisions.