Thankful is the correct spelling. “Thankfull” is incorrect. The adjective thankful means feeling or expressing gratitude, while thankfull is simply a common spelling mistake.
I remember writing a thank you message after receiving a thoughtful gift. As I typed, I paused for a moment and wondered, “Is it thankful or thankfull?” Since many English words end with full, it’s easy to think thankfull should be correct. However, English follows a different spelling rule for this word.
Many people search for thankful or thankfull because they want to avoid spelling mistakes in emails, greeting cards, social media posts, and formal writing. This guide explains the correct spelling, its origin, common mistakes, examples, and frequently asked questions in simple language.
Thankful or Thankfull: Quick Answer
The short answer is:
- Thankful = ✅ Correct spelling
- Thankfull = ❌ Incorrect spelling
Examples
✅ Correct:
- I am thankful for your support.
- She felt thankful after receiving the award.
- We are thankful for everyone’s help.
❌ Incorrect:
- I am thankfull for your support.
- She felt thankfull after receiving the award.
Quick Comparison Table of Thankful vs Thankfull
| Word | Correct? | Meaning |
| Thankful | ✅ Yes | Feeling or expressing gratitude |
| Thankfull | ❌ No | Incorrect spelling |
The Origin of Thankful and Thankfull
Origin of Thankful
The word thankful comes from the Old English word þanc, meaning “thought, gratitude, or thanks,” combined with the suffix ful, meaning “full of.”
Together, thankful literally means full of thanks or gratitude.
Why “Thankfull” Is Incorrect
I often notice people add an extra l because they compare it with words like:
- Carefull ❌ (Incorrect)
- Careful ✅
- Hopefull ❌ (Incorrect)
- Hopeful ✅
The suffix ful is normally spelled with one l when added to another word.
British English vs American English Spelling
Unlike words such as colour/color or labelled/labeled, thankful has the same spelling in British English and American English.
Comparison Table
| Word | British English | American English |
| Thankful | Thankful | Thankful |
| Thankfull | ❌ Incorrect | ❌ Incorrect |
Examples
British English
We are thankful for your kindness.
American English
We are thankful for your kindness.
The spelling is identical in all major varieties of English.
Which Spelling Should You Use?
Always use thankful.
Use “Thankful” When:
- Expressing gratitude.
- Writing thank you messages.
- Sending greeting cards.
- Writing formal or informal emails.
- Posting on social media.
Examples
I am thankful for your friendship.
We are thankful for your generous support.
She was thankful that everyone arrived safely.
Audience Based Advice
| Audience | Recommended Spelling |
| United States | Thankful |
| United Kingdom | Thankful |
| Canada | Thankful |
| Australia | Thankful |
| Global Audience | Thankful |
No major English speaking country uses thankfull as the standard spelling.
Common Mistakes with Thankful or Thankfull
Mistake #1: Adding an Extra “L”
❌ Incorrect:
I am very thankfull today.
✅ Correct:
I am very thankful today.
Mistake #2: Confusing the ” ful” Suffix
❌ Incorrect:
Hopefull
✅ Correct:
Hopeful
The same spelling rule applies to thankful.
Mistake #3: Using Thankfull in Formal Writing
❌ Incorrect:
We are thankfull for your cooperation.
✅ Correct:
We are thankful for your cooperation.
Mistake #4: Assuming Both Spellings Are Accepted
❌ Incorrect:
Thankfull is a British spelling.
✅ Correct:
Only thankful is correct in both British and American English.
Mistake #5: Forgetting the Base Word
❌ Incorrect:
She looked thankfull.
✅ Correct:
She looked thankful.
Thankfull or Thankful in Everyday Examples
In Emails
✅ Correct:
We are thankful for your continued support.
In Greeting Cards
✅ Correct:
I am thankful to have you in my life.
On Social Media
✅ Correct:
Feeling thankful for another wonderful year.
In News Reports
✅ Correct:
The family said they were thankful for the community’s assistance.
In Formal Writing
✅ Correct:
The organization is thankful for the contributions of its volunteers.
Thankful or Thankfull: Google Trends & Usage Data
People often search thankful or thankfull because the pronunciation does not clearly show whether the word has one l or two.
Why People Search This Query
I often notice questions like:
- Is thankful spelled with one l or two?
- Why isn’t it thankfull?
- Is thankfull accepted anywhere?
- What is the correct spelling?
The confusion comes from the ful suffix.
Countries Where Interest Is Common
| Country | Common Search Intent |
| United States | Correct spelling |
| United Kingdom | Grammar and writing |
| Canada | English learning |
| Australia | Common spelling mistakes |
| India | Vocabulary and usage |
Usage Comparison Table of Thankfull vs Thankful
| Variation | Correct? |
| Thankful | ✅ Yes |
| Thankfull | ❌ No |
| Feeling Thankful | ✅ Yes |
| Very Thankful | ✅ Yes |
| Thankfull Person | ❌ No |
The correct spelling in dictionaries, books, and professional writing is thankful.
Frequently Asked Questions
1. Which is correct, thankful or thankfull?
Thankful is correct. Thankfull is a spelling mistake.
2. Why is thankful spelled with one “l”?
Because the suffix ful is generally spelled with a single l when added to another word.
3. Is thankfull ever correct?
No. Standard English uses thankful.
4. Do British and American English spell thankful differently?
No. Both use thankful.
5. What does thankful mean?
It means feeling or expressing gratitude or appreciation.
6. Is thankful an adjective?
Yes. Thankful is an adjective describing someone who feels gratitude.
7. How can I remember the correct spelling?
Remember that the suffix is ful, not full. So write thank + ful = thankful.
Conclusion
Understanding thankful or thankfull is easy once you know the spelling rule. I remember hesitating before writing a thank you note because the word sounded like it might need two l letters. However, English uses the suffix ful, which is normally spelled with only one l.
That is why thankful is the only correct spelling in both British English and American English. The spelling thankfull does not follow standard English rules and should be avoided in emails, greeting cards, academic work, business writing, and everyday communication.
A simple trick is to remember that thankful means full of thanks, but the suffix itself is still written as ful, not full. Once you remember this rule, you’ll confidently choose the correct spelling every time.
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My name is Antonia White, and I’m an English writer who enjoys crafting thoughtful and engaging stories. I focus on clarity and depth in my writing, aiming to connect with readers through meaningful ideas and a genuine, approachable style.
