Is "test sb out" formal or informal?

It is mostly informal but widely used in spoken and written English.

Can I say "test out sb"?

Yes, but it is less common. "Test sb out" is preferred.

What is a similar phrase to "test sb out"?

"Try out" and "put sb to the test" are similar but have slightly different uses.

How do I use "test sb out" in a sentence?

Use it to describe evaluating someone’s skills or behavior, e.g., "They tested her out before hiring."

Test sb out Meaning & Examples: How to Use This Phrasal Verb

What Does “Test sb out” Mean?

“Test sb out” means to try someone’s abilities, behavior, or reactions to see how they perform or respond in certain situations.

Introduction

The phrasal verb “test sb out” is commonly used in English to describe checking or trying someone to understand their skills, reactions, or trustworthiness. Whether in school, work, or personal life, people often “test someone out” before fully trusting or accepting them. Understanding the test sb out meaning helps learners use it naturally in conversations. It’s a useful expression when you want to describe evaluating someone informally or formally.

Quick Info Box

Phrasal verb: test somebody out
Type: transitive
Level: B2
Short meaning: to try or check someone’s abilities or reactions

Structure (Grammar Rules)

“Test sb out” is a separable phrasal verb. You can place the object (somebody) between “test” and “out” or after “out.”

test somebody out
test out somebody

Both forms are correct, but the first form is more common.

How to Use Test sb out?

You use “test sb out” when you want to describe trying someone to observe their skills or behavior. It often implies a trial or evaluation period. For example, a teacher might test a new student out to see how they perform in class. A manager might test out a new employee to check their work quality. It is informal but widely used in spoken and written English.

Examples

Here are some examples to show how “test sb out” is used in sentences.

We decided to test him out before offering a permanent position.
The coach tested out the new player during practice yesterday.
She tested out her new assistant by giving her a difficult task.
Before trusting him with the project, they tested him out on smaller assignments.
They are testing out several candidates this week to find the best fit.

These sentences show “test sb out” used naturally to describe evaluating someone.

Common Mistakes

People sometimes confuse the structure or meaning of “test sb out.” Here are examples of incorrect versus correct usage.

Incorrect: They test out him before hiring.
Correct: They test him out before hiring.
Incorrect: I want to test out him.
Correct: I want to test him out.
Incorrect: She tests out the new employee’s work.
Correct: She tests the new employee out.

Remember to place the person (object) correctly between “test” and “out.”

Differences / Synonyms

Similar phrasal verbs include “try out” and “put sb to the test.” While “test sb out” focuses on evaluation, “try out” often means to experiment or attempt something new.

Try out: to test something or someone to see if they are suitable.
Put sb to the test: to challenge someone to prove their ability.

“Test sb out” is more informal and usually about informal trials, while “put sb to the test” can be more formal or serious.

Common Collocations

When using “test sb out,” certain objects frequently appear. These collocations help make your sentences natural.

Test a student out: to evaluate a student’s knowledge or skills.
Test a new employee out: to check a new worker’s abilities.
Test a player out: to try a sports player in practice or games.
Test a candidate out: to evaluate a job applicant.
Test a friend out: to see if someone is trustworthy or reliable.

Related Phrasal Verbs

Here are related phrasal verbs of test sb out:

Real-life Dialogue

Here is a short conversation showing how people use “test sb out” naturally.

Anna: Are you sure he can do the job?

Ben: Not yet. We’re going to test him out for a week first.

Anna: That’s a good idea. It’s better to see how he works before deciding.

Practice

Try to complete the sentences with the correct form of “test sb out.”

Before hiring the new assistant, the manager decided to ______ her ______ on a small project.
The coach wants to ______ the young player ______ during the next game.
They are ______ several candidates ______ this week.

FAQ

What does “test sb out” mean?
It means to try or check someone’s abilities or reactions.
Is “test sb out” formal or informal?
It is mostly informal but widely used in spoken and written English.
Can I say “test out sb”?
Yes, but it is less common. “Test sb out” is preferred.
What is a similar phrase to “test sb out”?
“Try out” and “put sb to the test” are similar but have slightly different uses.
How do I use “test sb out” in a sentence?
Use it to describe evaluating someone’s skills or behavior, e.g., “They tested her out before hiring.”