If you’ve ever paused while writing “Thursdays” or “Thursday’s”, you’re not alone. These two forms look nearly identical, yet they serve completely different purposes in English and using the wrong one can subtly affect your writing clarity.
The good news? Once you understand the simple rule behind plural vs possessive forms, you’ll never second-guess yourself again. This guide breaks everything down in a friendly, easy-to-follow way with real examples, common mistakes, and quick tips you can apply immediately.
Quick Answer:
- Thursdays = plural form (more than one Thursday)
- Thursday’s = possessive form (something belongs to Thursday)
👉 Use “Thursdays” when talking about repeated days.
👉 Use “Thursday’s” when showing ownership or association.
What Does “Thursdays” Mean?
“Thursdays” is simply the plural form of Thursday. It refers to multiple occurrences of the day.
Examples:
- I go to the gym on Thursdays.
- Thursdays are usually very busy for me.
- We have meetings every other Thursdays. ❌ (Incorrect)
- We have meetings every other Thursday. ✅
When to Use “Thursdays”
Use it when:
- Talking about routines
- Referring to repeated weekly events
- Describing general patterns
Related phrases (LSI keywords):
- every Thursday
- on Thursdays
- weekly schedule
- recurring days
What Does “Thursday’s” Mean?
“Thursday’s” is the possessive form of Thursday. It shows that something belongs to or is associated with that specific day.
Examples:
- Thursday’s meeting has been canceled.
- I’m preparing for Thursday’s presentation.
- Don’t forget Thursday’s deadline.
Here, the apostrophe + “s” indicates that something (meeting, presentation, deadline) is linked to Thursday.
When to Use “Thursday’s”
Use it when:
- Something belongs to Thursday
- Referring to events scheduled on that day
- Showing association with a specific Thursday
Key Differences at a Glance
| Feature | Thursdays | Thursday’s |
| Grammar Type | Plural noun | Possessive noun |
| Meaning | More than one Thursday | Something belonging to Thursday |
| Apostrophe | ❌ No | ✅ Yes |
| Example | I work on Thursdays | Thursday’s meeting is important |
| Usage Context | Routine, repetition | Ownership, association |
Common Mistakes to Avoid
Even fluent English speakers mix these up. Here are the most common errors and how to fix them.
1. Using “Thursday’s” for Plural
❌ I go jogging on Thursday’s
✅ I go jogging on Thursdays
👉 Tip: If you mean “every week,” don’t use an apostrophe.
2. Forgetting the Apostrophe in Possessive Form
❌ Thursdays meeting is canceled
✅ Thursday’s meeting is canceled
👉 Tip: If something belongs to Thursday, you need the apostrophe.
3. Confusing Singular and Plural Possessive
Sometimes people overthink:
- Singular: Thursday’s event
- Plural possessive (rare): Thursdays’ events
Example:
- All Thursdays’ schedules are different. (referring to multiple Thursdays)
Simple Rule to Remember
Ask yourself this question:
👉 “Am I talking about more than one Thursday, or does something belong to Thursday?”
- More than one? → Thursdays
- Belongs to Thursday? → Thursday’s
Real-Life Usage Examples
Let’s look at natural sentences you might use daily:
Routine Context:
- I take online classes on Thursdays.
- Thursdays are my favorite day of the week.
Possessive Context:
- Thursday’s weather looks sunny.
- I’m nervous about Thursday’s interview.
Mixed Context:
- I usually relax on Thursdays, but Thursday’s meeting is important.
American vs British English Differences
Good news there’s no difference between American and British English in this case.
Both follow the same rules:
- Thursdays = plural
- Thursday’s = possessive
However, British English may more often use phrases like:
- “on a Thursday” instead of “on Thursdays”
Example:
- British: I go there on a Thursday
- American: I go there on Thursdays
Both are correct and widely understood.
Why This Mistake Happens So Often
There are a few reasons people confuse these forms:
- Apostrophes are often misunderstood
- Many assume apostrophes always mean plural (they don’t!)
- Fast typing leads to automatic errors
- Spellcheck tools don’t always catch context mistakes
Understanding the rule not memorizing helps you avoid errors naturally.
Pro Tips for Perfect Usage
Here are quick, practical tips you can apply instantly:
- Think “ownership” → use apostrophe
- Think “more than one” → no apostrophe
- Read your sentence out loud it often reveals mistakes
- Replace the word:
- “Thursday’s meeting” → “the meeting of Thursday” (works ✅)
- “Thursdays meeting” → sounds wrong ❌
FAQs
1. Is “Thursdays” ever possessive?
Yes, but rarely. The plural possessive is “Thursdays’” (apostrophe after “s”).
Example:
- The Thursdays’ schedules were inconsistent.
2. Can I say “on Thursday’s”?
No, that’s incorrect.
✅ Correct: on Thursday
✅ Correct: on Thursdays
❌ Incorrect: on Thursday’s
3. Which is correct: “every Thursday” or “every Thursdays”?
✅ Correct: every Thursday
❌ Incorrect: every Thursdays
4. Why does “Thursday’s” need an apostrophe?
Because it shows possession something belongs to Thursday.
5. Is this rule the same for other days?
Yes! The same rule applies:
- Mondays vs Monday’s
- Fridays vs Friday’s
6. Can “Thursday’s” refer to time?
Yes.
Example:
- Thursday’s events were exciting.
7. Is “Thursdays are busy” correct?
Yes, perfectly correct it refers to multiple Thursdays.
8. How can I quickly check my usage?
Replace the word:
- If “of Thursday” works → use Thursday’s
- If “many Thursdays” works → use Thursdays
Final Summary
Understanding the difference between Thursdays and Thursday’s comes down to one simple concept: plural vs possessive. “Thursdays” refers to multiple occurrences of the day, often used when talking about routines or repeated events. On the other hand, “Thursday’s” shows ownership or association, meaning something belongs to or happens on that specific day.
Once you train yourself to pause and ask, “Am I talking about more than one or ownership?”, the confusion disappears. This small grammar fix can significantly improve your writing clarity and professionalism, especially in emails, content writing, and everyday communication.
Actionable Takeaway
Next time you write:
- Use Thursdays for habits and schedules
- Use Thursday’s for events, deadlines, or ownership
👉 Quick trick: No apostrophe = plural. Apostrophe = possession.
Practice with a few sentences today, and this rule will become second nature.
Ethan William is the author behind SpellPeak, passionate about clear communication and meaningful language. He writes to help readers express ideas with confidence, simplicity, and impact. His work focuses on clarity, learning, and empowering individuals and businesses through thoughtful, practical content. He values creativity, consistency, and ethical digital publishing worldwide.
