Questionnaire means a set of questions used to collect information. Questionaire is a misspelling. The correct spelling has two n’s.
Have you just typed a work email and noticed a red spelling line under “questionaire”? This small error can make you pause before you hit send. The good news is that the fix is simple. Questionaire or questionnaire is a common spelling choice, but only one form is correct in standard English. A questionnaire is a list of questions used to gather facts, views, or feedback. Once you learn the spelling and a simple memory trick, you can write it with ease.
Questionaire or Questionnaire: The Quick Answer
Questionnaire is the correct spelling in American English and British English. However, questionaire is a common spelling mistake, not a standard word.
For example:
- Correct: Please complete the questionnaire by Friday.
- Incorrect: Please complete the questionaire by Friday.
The trick is to look for the double n in questionnaire. If you leave out one n, the word is wrong.
Where Does the Word Questionnaire Come From?
The word questionnaire came into English from French in the late 1800s. It is linked to the French word questionner, which means to ask questions.
That history helps explain why the spelling may look unusual. The word has a French ending, so it does not look like some common English words.
You can still learn it with a simple pattern:
question + naire = questionnaire
The word starts with “question,” which already ends in n. Then, the next part starts with another n. As a result, the full word has two n’s in a row.
This is why “questionaire” is wrong. It leaves out one of those letters.
Questionnaire Explained: Key Differences
The main difference is simple. Questionnaire is the correct word, while questionaire is a misspelling.
However, you may also see words like “survey,” “form,” and “poll” used in similar ways. These words are related, but they do not always mean the same thing.
- Questionnaire: A set of questions used to collect answers.
- Survey: A way to gather and review information from people.
- Form: A paper or online page that asks for details.
- Poll: A short set of questions used to learn what people think or choose.
For example, a company may run a customer survey by sending people a questionnaire. In that case, the survey is the wider task, while the questionnaire is the set of questions.
| Term | Meaning | When to Use | Region/Context |
| Questionnaire | A set of questions | To gather facts, views, or feedback | American and British English |
| Questionaire | A misspelling | Do not use in standard writing | Not a standard spelling |
| Survey | A way to collect or review answers | For research or customer feedback | Common in the US and UK |
| Form | A page that asks for details | For sign-ups or applications | Common in everyday use |
| Poll | A short set of questions or a vote | To learn views or choices | Common in news and social media |
Which One Should You Use?
The answer depends on what you are writing, but the spelling stays the same. Use questionnaire whenever you mean a set of questions.
For students: Use questionnaire in essays, reports, and research work because it is the standard spelling.
For teachers: Write questionnaire when asking students to share views about a lesson or class. For example, “Please complete the class questionnaire.”
For business teams: Use questionnaire in customer feedback forms, staff reviews, and market research. This helps keep emails and reports clear.
For writers and editors: Choose questionnaire in articles, books, and web pages. Also, check the spelling in headings and image text.
For casual messages: Use questionnaire in texts or posts when you need the word. Even in a short message, the correct spelling is best.
In short, there is no need to choose between two accepted spellings. Use questionnaire in every type of standard English writing.
Common Mistakes With Questionnaire
Because questionnaire is a long word, it is easy to type it the wrong way. These simple checks can help you avoid common errors.
Leaving Out the Second N
- Wrong: The team sent a questionaire to its clients.
- Right: The team sent a questionnaire to its clients.
This mistake happens because the word sounds shorter than it looks. So, check for two n’s before you send your work.
Changing the Ending
- Wrong: Please fill out the questionnare.
- Right: Please fill out the questionnaire.
The ending must be “naire,” not “nare.” Although the forms look close, only questionnaire is correct.
Mixing Up Questionnaire and Survey
- Wrong idea: A questionnaire and a survey always mean the same thing.
- Better: A questionnaire is a set of questions, while a survey can mean the wider process of collecting and reviewing answers.
For example, a school may run a survey about student needs by using a questionnaire. The two terms are linked, but they have different roles.
Forgetting the Correct Plural
- Wrong: We collected ten questionaires.
- Right: We collected ten questionnaires.
When you mean more than one, add an s to the correct word. The plural form is questionnaires.
Trusting Spellcheck Without a Review
A spelling tool may flag questionaire, but you should still review the full sentence. Because spellcheck tools can miss some errors, a quick look can save you from sending a mistake.
Questionnaire in Real-World Examples
Seeing the word in real situations makes it easier to remember. Here are examples you can use as a guide.
Professional Email
Subject: Customer Feedback Questionnaire
Hello Team,
Please complete the questionnaire by Friday so we can review the feedback. Once everyone has sent their answers, we can plan our next steps.
Thank you.
News Headline
New School Questionnaire Seeks Student Feedback
The school will share a questionnaire to learn what students think about class activities. As a result, teachers can use the answers to plan future lessons.
Social Media Post
We want to hear from you! Please fill out our short questionnaire and share your thoughts. Your feedback can help us make our service better.
Formal Document
The research team used a questionnaire to collect answers from people who took part in the study. Before reviewing the results, the team checked each completed form for missing answers.
School Assignment
Our class completed a questionnaire about healthy habits. After that, we compared the answers and discussed what we had learned.
In each example, questionnaire is the correct spelling. You can use it in work, school, research, and everyday writing.
Questionnaire: Data, Trends and Usage
People search for “questionaire or questionnaire” when they are unsure about the spelling. This is a clear example of a spelling and word-choice search.
The search often comes from a person who wants a fast answer. They may be writing an email, finishing a school task, or preparing a report.
Here are the main reasons people look up this term:
- Students want to spell the word correctly in homework, essays, and research.
- Office workers want to avoid errors in emails and reports.
- Teachers and researchers need the correct term for forms used to collect answers.
- Website writers want to use the right spelling in page titles and online content.
- English learners want to build their spelling skills and learn the meaning.
The two spellings look almost the same, which is why the error is easy to make. However, the correct form is easy to check once you know the double-n rule.
There is no need to guess at search numbers or trends to understand the main point. The search intent is clear: people want to know which spelling is right and how to use it.
For website owners, this also shows why clear answers matter. A short definition, correct examples, and a simple spelling tip can meet the reader’s need without making the topic hard to follow.
Questionnaire: Comparison at a Glance
Use this table for a quick check before you finish writing.
| Term/Variant | Meaning | Region/Context | Best Used When |
| Questionnaire | Correct English word for a set of questions | All standard English settings | Writing about forms or research |
| Questionaire | Incorrect spelling | Not accepted as the standard form | Never use in edited writing |
| Questionnaires | Correct plural of questionnaire | All standard English settings | Talking about two or more sets of questions |
| Survey | A way to collect or review information | Research, business, and public feedback | Talking about the wider process |
| Survey form | A form used to collect answers | Online or paper surveys | Naming a form people need to fill out |
Remember, questionnaire is the correct spelling in both American and British English. The other terms in the table have their own uses, but questionaire is not a valid spelling choice.
Frequently Asked Questions About Questionnaire
Is it questionnaire or questionaire?
Questionnaire is correct, while questionaire is a misspelling. Because the correct form has two n’s, check the middle of the word before you submit your work.
What does questionnaire mean?
A questionnaire is a list of questions used to collect information, views, or feedback. For example, a teacher may use one to ask students about a class.
How do you spell questionnaire correctly?
The correct spelling is Q-U-E-S-T-I-O-N-N-A-I-R-E. To make it easier, remember “question” followed by “naire,” which gives you the double n.
Is questionnaire the same as a survey?
Not always. A questionnaire is the set of questions, while a survey can mean the full process of gathering and reviewing answers. However, people sometimes use the words in similar ways in everyday speech.
Is questionnaire acceptable in formal writing?
Yes, questionnaire is the correct form for formal writing. Use it in school essays, research papers, work emails, reports, and other professional documents.
Is questionnaire spelled differently in American and British English?
No, the standard spelling is questionnaire in both forms of English. However, some related words, such as “color” and “colour,” do have regional spelling differences.
Where did the word questionnaire come from?
The word came into English from French in the late 1800s. It is linked to a French word meaning to ask questions, which fits its use as a set of questions for gathering information.
Conclusion
The choice between questionaire or questionnaire is easy once you know the rule. Questionnaire is the correct spelling, and questionaire is a mistake. The key detail is the double n in the middle of the word.
Remember that a questionnaire is a set of questions used to collect facts, views, or feedback. A survey may use a questionnaire, but the two terms do not always mean the same thing. Also, the spelling stays the same in American and British English.
Before you send an email, finish a report, or post online, check that you have written questionnaire correctly. Keep the simple rule in mind: question + naire = questionnaire. Now, use the correct form with confidence and share this tip with anyone who may need it.
Curious about other tricky words? Explore Eventhough or Even Though.
I started writing about English word differences after years of teaching students who kept making the same mistakes. My focus is on making spelling rules feel simple and easy to remember. At WordsCombo, I turn confusing word pairs into clear comparisons.
