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Word of the Day Friday, June 12, 2026

quinquagenarian

/kwɪŋkədʒɪˈnɛəriən/ noun · British & US
Valid in UK
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What does quinquagenarian mean?

The term 'quinquagenarian' refers to a person in their fifties, typically between 50 and 59 years old. It is often used to describe someone who is middle-aged, but it can also be used more broadly to refer to anyone who is in this stage of life. The term is derived from the Latin words 'quinque,' meaning five, and 'decennium,' meaning decade. Quinquagenarians are often characterized as being in their prime, with many still working and actively engaged in their communities. However, they may also be experiencing some physical and emotional changes associated with aging. The term 'quinquagenarian' is not commonly used in everyday conversation, but it may be used in more formal or academic contexts to refer to someone in this stage of life.

noun

A person in their fifties, typically between 50 and 59 years old.

Senses
  1. A person in their fifties, typically between 50 and 59 years old.
Example

"My quinquagenarian aunt is still very active and loves to travel."

More examples

"My quinquagenarian aunt is still very active and loves to travel."

"The quinquagenarian group of friends went on a road trip together."

Plural quinquagenarians

The plural form 'quinquagenarians' is used to refer to multiple people in their fifties.

Example

"The quinquagenarians in our community are very active and engaged."

Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.

Etymology of quinquagenarian

The term 'quinquagenarian' is derived from the Latin words 'quinque,' meaning five, and 'decennium,' meaning decade. It was first used in the 15th century to refer to someone who was 50 years old. Over time, the term has evolved to refer to anyone in their fifties, typically between 50 and 59 years old.

Usage notes

The term 'quinquagenarian' is often used to describe someone who is in their fifties, but it can also be used more broadly to refer to anyone who is middle-aged.

Synonyms for quinquagenarian

Antonyms of quinquagenarian

Rhymes with quinquagenarian