14 Other Ways to Say “Make Sure”

Other Ways to Say Make Sure

“Make sure” is a commonly used term that emphasizes the need for certainty, precision, or the correct performance of a task. For example, when someone says, “Make sure you turn off the lights,” they’re emphasizing the importance of not forgetting that particular task.

However, there are many expressions that can convey this feeling, each with its own unique nuance and appropriate context. This article aims to explore these alternatives, providing readers with a wider vocabulary to express confidence and certainty.

Other Ways to Say “Make Sure”

1. Ensure

Example: Ensure that the data entered is accurate before submission.”

Meaning: To guarantee or make certain. This implies a level of responsibility to see that a particular result or condition is met, ensuring that potential pitfalls or errors are avoided.

Usage: Suitable for both formal and informal contexts, especially when emphasizing the importance of accuracy or certainty.

2. Verify

Example: “Before publishing the report, verify all the facts.”

Meaning: To confirm the truth or accuracy of something. This involves a research and validation process to establish the authenticity of the information or data.

Usage: Common in contexts where factual accuracy is paramount, such as journalism or research.

3. Confirm

Example: “Please confirm your email address to complete the registration.”

Meaning: To acknowledge or establish the truth or correctness of something. Offers final confirmation after initial doubts or questions.

Usage: Widely used in both everyday and professional settings, especially when seeking affirmation.

two woman talking office computer

4. Ascertain

Example: “The detective wanted to ascertain the whereabouts of the suspect on the night of the crime.”

Meaning: To understand or learn with certainty. It involves thorough investigation or inquiry to determine facts or truths that are not immediately obvious.

Usage: Often found in more formal or investigative contexts.

5. Double-check

Example: “It’s always a good practice to double-check your answers in an exam.”

Meaning: To review or recheck for accuracy. It emphasizes the act of taking the extra step to ensure that mistakes are not made.

Usage: Suitable for situations where there’s a possibility of oversight or error.

6. Guarantee

Example: “This method will guarantee that the paint lasts longer.”

Meaning: To promise a certain result. It is a strong claim that a specific result will occur, often backed by warranties or assurances.

Usage: Used when emphasizing the reliability or effectiveness of a method or product.

7. Affirm

Example: “The witness affirmed that she saw the defendant at the scene.”

Meaning: To state firmly and publicly. It is a statement made with conviction, often without any doubt or hesitation.

Usage: Common in legal contexts or when making formal declarations.

8. Certify

Example: “The course completion certificate certifies that the student has met all the requirements.”

Meaning: To formally admit or vouch for something as true. It is an authoritative statement, often backed by an official body or institution.

Usage: Often used in educational or official contexts.

9. Reassure

Example: “The leader reassured the public about the safety measures in place.”

Meaning: Restoring trust or alleviating doubts. It involves comforting someone by addressing their worries or fears.

Usage: Suitable when addressing concerns or uncertainties.

10. Validate

Example: “The experiment was designed to validate the scientist’s hypothesis.”

Meaning: To prove the validity or legitimacy of something. This involves a process of validation in which ideas, theories, or claims are tested against evidence or standards.

Usage: Common in research or when discussing the credibility of an idea.

11. Cross-check

Example: “Journalists often cross-check their sources to ensure the reliability of their information.”

Meaning: For comparison with another source to check accuracy. It is a method of ensuring reliability by checking information against multiple sources or references.

Usage: Used when emphasizing thoroughness in verification.

12. Substantiate

Example: “The lawyer provided evidence to substantiate his client’s alibi.”

Meaning: To support with proof or evidence. This includes providing material or concrete evidence to support a claim, theory, or proposition.

Usage: Common in contexts where claims or statements need to be backed by evidence.

13. See to it

Example: See to it that the documents are filed by the end of the day.”

Meaning: To ensure that a particular action is completed or that a certain condition is met. It implies taking responsibility or overseeing a task to its completion.

Usage: Common in both formal and informal contexts, especially when delegating tasks or emphasizing the importance of a particular action.

14. Be certain

Example: Be certain to turn off the lights before you leave.”

Meaning: To have no doubt or be sure about a particular action or condition. It emphasizes the need for thoroughness and avoiding oversight.

Usage: Suitable for a variety of contexts, from everyday conversations to more formal instructions or guidelines.

14 Other Ways to Say Make Sure

When to Use Different “Make Sure” Alternatives

In Professional Settings

In workplaces or professional environments, clarity and precision are crucial. Using terms like “ascertain” or “validate” can convey a sense of thoroughness and diligence.

In Everyday Conversations

For day-to-day interactions, simpler terms like “confirm” or “double-check” are more relatable and easily understood, making communication smooth and effective.

In Academic or Research Contexts

In academic writings or research papers, it’s essential to use terms that convey rigor and precision. Words like “substantiate” or “verify” emphasize the importance of evidence and accuracy.


The term “make sure” is just one of many expressions we use to emphasize certainty and confidence. However, as we have seen, there are numerous alternatives that can be used depending on the context and the level of formality required.

For those interested in diving deeper into the world of synonyms and exploring more ways to express “make sure,” Thesaurus.com offers a comprehensive list that can be a valuable resource.


  1. What does “make sure” mean? “Make sure” means to ensure that something is done correctly or to a certain standard.
  2. Is “make sure” formal or informal? “Make sure” is versatile and can be used in both formal and informal contexts. However, alternatives like “ensure” or “ascertain” might be preferred in more formal settings.
  3. Can “make sure” and “ensure” be used interchangeably? Yes, “make sure” and “ensure” are often used interchangeably, but “ensure” is sometimes considered more formal.
Categorized as Verbs

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