Separate vs Split them up

When to use each in English, with meaning, register, and examples.

Separate

Top 1,000 (very common)A2adjective

Split them up

Top 2,000 (common)
Most common: Separate
 SeparateSplit them up
Pronunciation🇬🇧 /["/ˈseprət/"]/🇺🇸 /["/ˈseprət/"]/🇬🇧 //splɪt ðɛm ʌp//🇺🇸 //splɪt ðɛm ʌp//
MeaningTo put things apart from each other.To separate or divide a group.
ExampleIt's important to keep the separate components of the experiment organized.The teacher decided to split them up into smaller groups for the project.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA2-
Part of speechadjective
Collocationsbe, become, remain, somewhat, very, essentially, from, go your separate ways, be, become, remain, somewhat, very, essentially, from, go your separate wayssplit them up into teams, split them up for clarity, split them up evenly, split them up by age, split them up for the activity
Antonymscombine, join, unite-
Common mistakes'Seperate' is a common misspelling., 'Separating' is sometimes incorrectly used with a direct object when it should not be.Using 'split' without 'them' when speaking about groups., Confusing with 'split up' which can imply ending a relationship., Not using the plural form when referring to multiple entities.
Usage notesUse 'separate' when discussing dividing items or concepts. It's neutral, suitable for both written and spoken contexts. Avoid in overly casual conversations.Used in various contexts, often informal. Avoid in highly formal writing. Common for discussions of relationships or tasks.

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Separate
Split them up

Frequently asked questions: Separate vs Split them up

What's the difference between Separate and Split them up?

Separate: To put things apart from each other. Split them up: To separate or divide a group.

Which is more common: Separate and Split them up?

Separate is the most common in everyday English.

Can you show an example of each?

Separate: It's important to keep the separate components of the experiment organized. Split them up: The teacher decided to split them up into smaller groups for the project.

Can I use Separate and Split them up interchangeably?

Not always. Separate and Split them up are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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