a month old

USAGE SUMMARY

The phrase "a month old" is correct and usable in written English.
It can be used to describe the age of something, typically referring to a person, animal, or object that has existed for one month. Example: "The puppy is a month old and has already learned several commands."

✓ Grammatically correct

News & Media

Academia

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

54 human-written examples

However, that survey was conducted in early August and is now roughly a month old.

The New York Times

"They have a weekly show they started in January, so it's about a month old.

The New York Times

The floods are nearly a month old.

The Economist

Age: About a month old.

The Guardian - Tech

Our son was only a month old.

The Guardian - Lifestyle

By his own admission, she is a month old.

Independent

Human-verified similar examples from authoritative sources

Similar Expressions

6 human-written examples

He left behind a wife and a month-old child.

Los Angeles Times

OK, maybe because I have a month-old titanium hip the subject's been on my mind.

Huffington Post

A woman at a store produces a month-old baby wallaby in a towel.

Huffington Post

India's supreme court recently extended a month-old ban on tourism within the country's tiger preserves.

Huffington Post

Why am I talking about a month-old indie release that has barely broken out?

Huffington Post

Expert writing Tips

Best practice

When describing the age of a person or animal, "a month old" is suitable, but consider using more specific terms like "four weeks old" or the exact number of days if precision is needed.

Common error

Avoid using "a month old" to describe inanimate objects when another metric like "new", "recently released", or "launched last month" would be more appropriate and informative.

Linguistic Context

The phrase "a month old" primarily functions as an adjective phrase modifying a noun. It describes the age of a person, animal, object, or event, indicating that it is one month in age. Ludwig AI confirms its correct usage across diverse contexts.

Expression frequency: Very common

Frequent in

News & Media

66%

Academia

16%

Formal & Business

9%

Less common in

Science

3%

Wiki

3%

Reference

0%

Ludwig's WRAP-UP

The phrase "a month old" is a common and grammatically correct way to describe something that has existed for one month. As Ludwig AI indicates, it's versatile and appears frequently in News & Media, Academia, and Formal & Business settings. When using this phrase, consider the level of precision required; sometimes, more specific terms like "four weeks old" or the exact number of days might be more appropriate. Also, ensure that the phrase is used logically, primarily with living things or events, rather than substituting for metrics like "new" when describing inanimate objects.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

One month in age

Rephrases the age using "in age" instead of "old".

Four weeks old

Expresses the age in weeks rather than months.

Approximately 30 days old

Provides a more precise estimate of the age in days.

One month since inception

Specifies the time elapsed since the beginning.

Recently born

Focuses on the recent occurrence of birth or creation.

Just a month past

Indicates the passage of one month.

Newly established

Highlights the newness of an organization or entity.

A moon old

Uses moon as a measure of age.

Thirty days of existence

Refers to the period of existence in days.

In its infancy

Uses a metaphorical expression to indicate an early stage of development.

FAQs

How can I use "a month old" in a sentence?

You can use "a month old" to describe the age of something that is one month old, such as "The puppy is "a month old" and is already learning commands."

What are some alternatives to saying "a month old"?

Depending on the context, alternatives to "a month old" include phrases like "one month in age", "four weeks old", or "approximately 30 days old".

Is it appropriate to use "a month old" for both people and objects?

While technically correct, using "a month old" is more common for living beings. For objects, consider using "recently released" or similar phrases for better clarity.

When should I use "a month old" versus more precise age measurements?

Use "a month old" when an approximate age is sufficient. For situations requiring exactness, specify the exact number of days or weeks instead.