under five

USAGE SUMMARY

The phrase "under five" is correct and usable in written English.
It can be used to refer to a quantity that is less than five, often in contexts such as age, measurements, or counts. Example: "The event is suitable for children under five years old."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

41 human-written examples

acceleration time under five seconds.

The New York Times

Children under five are at greatest risk.

Independent

"And chronic malnutrition among children under five".

The New Yorker

Under five per cent: no seats.

The New Yorker

(She stood at under five feet).

The New York Times

203 Manufactured Under Five Patents".

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

19 human-written examples

All-cause-under five mortality.

Cochrane Database of Systematic Reviews

Anything under five hundred million doesn't count.

The New Yorker

The entire population was under five-thousand Europeans.

Wikipedia

Measuring under-five mortality: validation of new low-cost methods.

Harvard University

Its under-five population share?

BBC

Expert writing Tips

Best practice

When referring to age groups, use "under five" to clearly specify individuals who are younger than five years old. This is especially relevant in contexts such as healthcare, education, and developmental studies.

Common error

Avoid using "over five" when you mean "younger than five". "Over five" indicates an age greater than five, while "under five" specifies those younger than that age. For example, don't say "This vaccine is for children over five"; instead, use "This vaccine is for children under five" if it's intended for children younger than five.

Linguistic Context

The phrase "under five" functions as a prepositional phrase acting as a modifier, typically describing a noun related to age or quantity. Ludwig shows that it is commonly used to specify age groups or amounts that are less than five. It aligns with standard English grammar rules.

Expression frequency: Common

Frequent in

News & Media

48%

Science

36%

Formal & Business

12%

Less common in

Academia

4%

Wiki

4%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "under five" is a grammatically sound and frequently used expression to denote something less than the number five, especially concerning age. Ludwig confirms its proper use and grammatical correctness. It appears most often in contexts like news reporting, scientific studies, and formal documentation. When writing, remember that "under five" specifies a quantity or age less than five, and avoid confusing it with "over five". Alternatives such as "less than five" or "younger than five" can be used for variety. Overall, "under five" is a versatile and reliable phrase that significantly contributes to clear communication.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

less than five

Replaces "under" with "less than", focusing on the numerical value.

younger than five

Specifies age more explicitly.

five years old or younger

Includes the age of five as the upper boundary.

those under five years of age

A formal variation with "those" specifying a group.

below the age of five

A more formal way to indicate age.

children aged zero to four

Specifies children within the given age range.

not yet five

Highlights that the age of five has not been reached.

before their fifth birthday

Emphasizes the time before reaching five years old.

in the zero to four age range

Uses numerical range to define the age group.

pediatric patients under five

Specifies children in the context of medical care.

FAQs

How do I use "under five" in a sentence?

You can use "under five" to describe age groups, such as "Children "under five" are more susceptible to certain illnesses", or to indicate a quantity, such as "The project was completed in "under five" months".

What can I say instead of "under five"?

You can use alternatives like "less than five", "younger than five", or "below the age of five" depending on the context. Each of these alternatives slightly changes the emphasis but conveys a similar meaning.

Which is correct, "under five" or "less than five"?

Both "under five" and "less than five" are correct. "Under five" is more common when referring to age, while "less than five" may be used in more general numerical contexts. For example, "children "under five"" is common, and "the cost was "less than five" dollars".

What's the difference between "under five" and "over five"?

"Under five" refers to individuals or quantities that are less than five. "Over five" refers to those or that which are more than five. It's crucial to use the correct term to avoid confusion. For example, saying "the speed was "over five" miles per hour" is the opposite of saying the speed was "under five" miles per hour".