Should you write “criteria is” or “criteria are”?
The correct choice in standard English is usually “criteria are” because criteria is the plural form of criterion.
For example, “The criteria are clearly defined” is grammatically correct.
However, when you are talking about just one standard or requirement, use the singular word criterion with is: “
The criterion is clearly defined.”
Many English learners find this rule confusing because criteria may sound like a singular noun.
It is also common to hear people use plural words as if they were singular in everyday conversation.
Understanding the difference between criterion and criteria will help you write accurate sentences in academic assignments, business reports, examinations, and professional emails.
In this guide, you will learn when to use “criteria are” and “criteria is,” how subject-verb agreement works, and which common mistakes to avoid.
Simple explanations, practical examples, and frequently asked questions will make the rule easy to remember.
Quick Answer: Criteria Is or Criteria Are?
“Criteria are” is correct in standard English when criteria means more than one standard or requirement. The word criteria is plural, while criterion is singular. Therefore, write “The criteria are important” when referring to several standards, but write “The criterion is important” when referring to one. Although “criteria is” sometimes appears in informal usage, it is generally avoided in formal writing.
Why Do People Confuse “Criteria Is” and “Criteria Are”?
People often confuse these expressions because criteria does not end in the letter s in the same way as many familiar English plural nouns. Its plural form comes from Greek, which explains why it follows a different pattern.
Consider these examples:
- Singular: The criterion is difficult to meet.
- Plural: The criteria are difficult to meet.
The difference becomes clear when you understand that criteria refers to two or more standards, conditions, or requirements.
Another reason for the confusion is that people sometimes use criteria to refer to a whole set of requirements as one general concept. However, in standard formal English, the noun remains grammatically plural even when the requirements are considered together.
For clear, correct writing, match criteria with plural verbs such as are, were, and have.
First Word: Criteria
What Does “Criteria” Mean?
Criteria is the plural form of criterion. It means the standards, rules, conditions, or requirements used to judge, evaluate, compare, or decide something.
For example:
- The selection criteria are strict.
- The criteria for admission are clearly stated.
- These criteria help us compare different products.
In each sentence, criteria refers to multiple standards or requirements.
Is “Criteria” Singular or Plural?
Criteria is plural. Its singular form is criterion.
| Singular | Plural |
|---|---|
| Criterion | Criteria |
| This criterion is important. | These criteria are important. |
| One criterion was missing. | Several criteria were missing. |
You can use criteria for academic assessment, job selection, product comparisons, scientific research, and decision-making.
Examples:
- The grading criteria are available online.
- The hiring criteria include relevant experience.
- Our evaluation criteria are based on quality and cost.
Second Word: Is
What Does “Is” Mean?
Is is a form of the verb be. It is used with singular subjects in the present tense, including he, she, it, and singular nouns.
Examples:
- The student is ready.
- The rule is simple.
- The criterion is clear.
Because criterion is singular, it correctly takes is.
Can You Use “Is” With “Criteria”?
In standard formal English, you should generally avoid using is directly with criteria when criteria means multiple standards.
Incorrect in standard usage: The criteria is clear.
Correct: The criteria are clear.
However, is can appear in a sentence that also contains the word criteria if the actual subject is singular.
For example:
- The list of criteria is complete.
Here, the subject is list, not criteria. Since list is singular, is is correct.
This distinction is an important part of subject-verb agreement.
Criteria Is vs. Criteria Are: Comparison Table
| Expression | Correct? | Explanation |
|---|---|---|
| The criteria are clear. | Yes | Criteria is plural. |
| The criteria is clear. | Generally no | The plural noun is paired with a singular verb. |
| The criterion is clear. | Yes | Criterion is singular. |
| The criterion are clear. | No | A singular noun needs a singular verb. |
| The list of criteria is clear. | Yes | The main subject, list, is singular. |
| These criteria were updated. | Yes | The plural noun takes the plural verb were. |
When to Use Each Expression
When Should You Use “Criteria Are”?
Use “criteria are” when you are referring to two or more standards, conditions, or requirements.
Examples:
- The criteria are difficult to satisfy.
- The eligibility criteria are listed below.
- Our selection criteria are based on merit.
- The assessment criteria are available to students.
The expression is appropriate in essays, research papers, workplace documents, and everyday communication.
When Should You Use “Criterion Is”?
Use “criterion is” when you are referring to one standard or requirement.
Examples:
- The most important criterion is experience.
- Cost is one criterion for choosing a supplier.
- This criterion is essential for admission.
- The final criterion is customer satisfaction.
Remember that the number of standards determines whether you use criterion or criteria.
When Should You Use “The List of Criteria Is”?
Use “the list of criteria is” when the subject is one list containing several requirements.
For example:
“The list of criteria is available on the university website.”
Although the sentence mentions several criteria, the main subject is the singular noun list. Therefore, the correct verb is is.
Compare:
- The criteria are available.
- The list of criteria is available.
Both sentences are correct because their grammatical subjects are different.
12 Examples of “Criteria Are” and “Criterion Is”
Here are 12 practical examples that show how to use both forms correctly.
- The criteria are clearly explained.
Several standards have been explained. - The selection criteria are strict.
Multiple requirements must be met. - The assessment criteria are fair.
Several standards are used to evaluate performance. - The eligibility criteria are listed online.
Applicants can review the requirements. - The criteria were changed last year.
More than one standard was updated. - The main criterion is quality.
Quality is the single most important standard. - One criterion is missing from the report.
A single requirement has been left out. - The final criterion is cost.
Cost is the last standard being considered. - The criteria have been approved.
Several standards received approval. - The list of criteria is complete.
The singular subject list takes is. - Each criterion is evaluated separately.
The word each refers to individual items, so the singular verb is correct. - All the criteria are relevant to the decision.
The sentence refers to multiple standards.
Additional Examples in Academic and Professional English
- The research criteria are explained in the methodology section.
- The criterion for passing the test is a score of 70%.
- The hiring criteria are designed to ensure fairness.
- Each criterion must be satisfied before approval is granted.
- The criteria for scholarship eligibility are clearly defined.
These examples demonstrate how the same grammar rule applies across different situations.
Common Mistakes With “Criteria Is” and “Criteria Are”
Mistake 1: Treating “Criteria” as Singular
Incorrect: The criteria is important.
Correct: The criteria are important.
Use are because criteria is plural.
Mistake 2: Using “Criteria” When You Mean One Requirement
Incorrect: The most important criteria is experience.
Correct: The most important criterion is experience.
If you mean one standard, use criterion.
Mistake 3: Ignoring the Main Subject
Incorrect: The list of criteria are complete.
Correct: The list of criteria is complete.
The main subject is list, which is singular. The phrase of criteria describes the list but does not determine the verb.
Mistake 4: Using “Each Criteria”
Incorrect: Each criteria is important.
Correct: Each criterion is important.
Each refers to individual items and takes a singular noun and verb in this construction.
Mistake 5: Using “Criteria Was”
Incorrect: The criteria was updated.
Correct: The criteria were updated.
Because criteria is plural, use were in the past tense.
However, you can say “The criterion was updated” when referring to one standard.
Memory Trick: How to Remember the Difference
Use this simple memory trick:
One criterion is; many criteria are.
Remember the matching pairs:
- One criterion is important.
- Two criteria are important.
- Each criterion is assessed.
- All criteria are assessed.
You can also remember that criteria ends with the same plural pattern as phenomena, the plural of phenomenon.
The easiest approach is to ask yourself one question before choosing the verb: Am I talking about one standard or several standards?
If there is one, use criterion is. If there are several, use criteria are.
American vs. British English: Is There a Difference?
There is no significant difference between American and British English in the standard use of criterion and criteria.
Both varieties generally follow the same subject-verb agreement rule.
| English variety | Singular form | Plural form |
|---|---|---|
| American English | The criterion is clear. | The criteria are clear. |
| British English | The criterion is clear. | The criteria are clear. |
In academic writing, professional documents, and formal communication, use the singular and plural forms consistently in both varieties.
Although some speakers may use criteria with a singular verb in informal contexts, the standard plural construction is the safer choice.
Similar Words: Criterion, Criteria, Standard, and Requirement
Several words have meanings related to criteria, but their grammatical use can differ.
1. Criterion
A criterion is one standard used to evaluate or judge something.
Example: Accuracy is an important criterion for scientific research.
2. Criteria
Criteria refers to multiple standards used for evaluation.
Example: The criteria are based on accuracy, reliability, and cost.
3. Standard
A standard is a level of quality or performance that something is expected to meet.
Example: The product meets the required safety standard.
Plural: The safety standards are strict.
4. Requirement
A requirement is something that must be fulfilled or provided.
Example: A university degree is a requirement for this position.
Plural: The job requirements are listed in the advertisement.
5. Condition
A condition is a circumstance or rule that must be satisfied or that affects a situation.
Example: One condition is that applicants must be at least 18 years old.
Plural: The conditions are clearly stated.
6. Qualification
A qualification is a skill, achievement, or credential that makes someone suitable for a role or activity.
Example: Relevant experience is one qualification for the job.
Plural: The required qualifications are listed below.
These words are related, but they are not always interchangeable. Choose the word that best expresses your intended meaning.
Final Verdict: Is It “Criteria Is” or “Criteria Are”?
Use “criteria are” in standard English when referring to multiple standards or requirements. Use “criterion is” when referring to a single standard.
The most important rule is subject-verb agreement:
- Correct: The criteria are important.
- Correct: The criterion is important.
- Correct: The list of criteria is complete.
- Generally incorrect in formal writing: The criteria is important.
Always identify the main subject before choosing the verb. This will help you avoid mistakes in essays, reports, examinations, and professional communication.
Frequently Asked Questions (FAQs)
1. Is it “criteria is” or “criteria are”?
“Criteria are” is the standard grammatical choice because criteria is plural. For example, “The criteria are clearly defined.” When referring to one standard, use “criterion is.”
2. Is “criteria” singular or plural?
Criteria is plural. Its singular form is criterion. For example, “One criterion is required” refers to one standard, while “Several criteria are required” refers to multiple standards.
3. Can I ever use “criteria is”?
In standard formal English, avoid using criteria is when criteria is the subject meaning multiple standards. However, is may be correct when the actual subject is singular, as in “The list of criteria is complete.”
4. Why do we say “the criteria are”?
We say “the criteria are” because criteria is a plural noun. English verbs must agree with their subjects in number, so plural subjects take plural verbs in the present tense.
5. Is “criteria was” correct?
Generally, no, when criteria refers to multiple standards. Use “criteria were.” For a single standard, use “criterion was.” For example, “The criterion was changed last week.”
6. What is the singular form of “criteria”?
The singular form is criterion. For example, “The most important criterion is accuracy.” The plural form is criteria, as in “The criteria are based on accuracy and reliability.”
7. Is “each criteria is” correct?
No. The standard expression is “each criterion is” because each refers to one item at a time. For example, “Each criterion is evaluated separately.”
8. Is “the list of criteria is” correct?
Yes. The main subject is list, which is singular, so it takes is. For example, “The list of criteria is available online.” By contrast, “The criteria are available online” uses criteria as the plural subject.
Remember This
Keep these five rules in mind:
- One criterion is — use the singular noun and verb.
- Many criteria are — use the plural noun and verb.
- Each criterion is — each takes a singular noun here.
- The criteria were — use the plural verb in the past tense.
- The list of criteria is — the main subject is the singular noun list.
The key is to distinguish the noun’s grammatical number from the number of words or ideas surrounding it.
Conclusion
The difference between “criteria is” and “criteria are” becomes easy when you remember that criterion is singular and criteria is plural. In standard English, use “criteria are” when discussing multiple standards, rules, or requirements. When referring to one standard, use “criterion is.” This simple rule will improve the accuracy of your grammar in both spoken and written English.
Always check the main subject before choosing a verb. A sentence such as “The criteria are clear” requires a plural verb, while “The list of criteria is clear” requires a singular verb because list is the subject. With a little practice, you can apply this rule confidently in academic assignments, professional reports, examinations, and everyday conversations.
