in twos

USAGE SUMMARY

"in twos" is correct and can be used in written English.
It is typically used when referring to two things or people at a time, such as "The students lined up in twos to enter the room."

✓ Grammatically correct

News & Media

Academia

Wiki

Science

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

Each directional movement is a byte in length and is in twos complement.

Cornell University

Characters meet in twos and threes; they scrutinize, seduce, stalk, retreat, manipulate, distract and attack.

The New York Times - Magazine

Still, they come, if not in droves at least in twos and threes.

The New York Times - Tech

Then everyone dances across the floor in twos, following along to sashays or purposeful struts.

The New York Times - Style

Lamp deals are always best in twos!

Forbes

What's less well known is that menacing space rocks sometimes come in twos.

BBC

A: Trouble comes in twos and threes and fours.

Los Angeles Times

Tina Fey and Ellie Kemper: Everything is better in twos!

HuffPost

"He always does things in twos.

The New Yorker

We went back in twos.

The Guardian - Sport

Human-verified similar examples from authoritative sources

Similar Expressions

1 human-written examples

All-in-ones (AIOs), pocket diapers or all-in-twos (AI2s), prefold diapers, and fitted diapers.

WikiHow

Expert writing Tips

Best practice

Pair it with other numbers for variety when describing informal groups, such as "in twos and threes", to suggest a relaxed or natural gathering.

Common error

Do not confuse the plural "in twos" (referring to groups) with the singular "in two" (referring to division). Use "in two" when something is split or broken into two separate parts, and "in twos" when multiple items are arranged into several groups of two.

Linguistic Context

The phrase "in twos" functions primarily as an adverbial prepositional phrase. It modifies a verb to describe the manner or arrangement of subjects. According to Ludwig AI, it is consistently used to denote grouping or distribution. It is most often found following verbs of movement or assembly like "walked", "arrived", "grouped" or "lined up".

Expression frequency: Common

Frequent in

News & Media

65%

Academia

15%

Wiki

10%

Less common in

Science

5%

Encyclopedias

3%

Social Media

2%

Ludwig's WRAP-UP

In summary, "in twos" is a versatile and grammatically correct phrase used to describe items or individuals organized into pairs. Ludwig AI highlights its prevalence in high-quality journalism and scientific literature, where it describes everything from molecular clusters to social gatherings. While synonyms like <a href="/s/in+pairs" target="_blank" rel="alternative">in pairs or <a href="/s/two+by+two" target="_blank" rel="alternative">two by two are perfectly interchangeable, "in twos" remains a standard choice for writers seeking a natural yet precise way to describe group dynamics. It is particularly effective when used in the common idiom "in twos and threes" to describe a casual, non-uniform distribution.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

in pairs

Uses a more formal noun to describe the same grouping effect.

two by two

Emphasizes the sequential nature of the movement or arrangement.

by twos

A slightly more concise variation common in mathematical or instructional contexts.

two at a time

Focuses on the rate of occurrence or processing rather than just the static group.

pairwise

Often used in technical or scientific contexts to describe comparisons or groupings.

in couples

Implies a more personal or social connection between the two individuals.

in duos

Suggests a performance or specific collaborative partnership context.

in sets of two

Provides a more clinical or organized description of the arrangement.

doublet by doublet

Highly specialized or literary way of describing paired occurrences.

in tandem

Suggests working together or occurring at the same time rather than just being grouped.

FAQs

How do I use "in twos" in a sentence?

You can use it to describe how people or things are organized, for example: "The hikers walked <a href="/s/in+twos" target="_blank" rel="alternative">in twos for safety."

What is the difference between "in twos" and "in pairs"?

While both mean the same thing, <a href="/s/in+pairs" target="_blank" rel="alternative">in pairs is often considered more formal, whereas "in twos" is common in descriptive journalism and everyday speech.

Is it correct to say "in twos and threes"?

Yes, this is a very common idiomatic expression used to describe small, scattered groups. You might see it in phrases like "people arrived <a href="/s/in+twos+and+threes" target="_blank" rel="alternative">in twos and threes throughout the evening."

Can I say "two by two" instead of "in twos"?

Absolutely. <a href="/s/two+by+two" target="_blank" rel="alternative">two by two is a direct synonym that often implies a more orderly or rhythmic movement, like animals entering the ark.