Understanding Swore vs Sworn: Dissecting the Past Tense of Swear

Swear, Swore, Sworn — See the Pattern

Read these sentences. Look at how the verb changes:

• She swears she is telling the truth. (now — every day)
• She swore she was telling the truth. (past — it is finished)
• She has sworn to tell the truth. (past with “has”)

Did you see the pattern? There are three forms:

When to Use Swore and When to Use Sworn

This is the part that confuses many learners. Here is the simple rule:

Use “swore” when you talk about the past — something that is finished:

• He swore he would never do it again.
• They swore to keep the secret.

Use “sworn” when there is a helping word before it — have, has, or had:

• I have sworn to tell the truth.
• She has sworn never to eat fast food again.
• They had sworn to protect each other.

Sworn as a describing word: You can also use “sworn” to describe someone or something — like a sworn enemy (a person who has always been your enemy) or a sworn statement (a promise to tell the truth).

Easy way to remember: If you see have, has, or had before it, use sworn. If not, use swore.

Real-Life Examples With Swear, Swore, and Sworn

Here are examples you might hear or say in everyday life:

• He swore he saw a fox in the garden last night. (past — it is finished)
• My brother has sworn off sugar for a month. (with “has” — use sworn; “sworn off” means promised to stop)
• She swore at the driver who nearly hit her. (past — “swore at” means said bad words to someone)
• The witness was sworn in before he spoke. (with “was” — “sworn in” means made a promise to be honest)
• I could have sworn I locked the door! (with “have” — use sworn; this means “I really believed”)

You are doing great. Now let’s look at the mistakes many learners make.

Three Mistakes to Avoid With Swear

Even advanced learners mix up “swore” and “sworn” sometimes — so if you get confused, you are not alone.

How to remember: Think of wear, wore, worn. It follows the same pattern: swear, swore, sworn. The ending changes from -ear → -ore → -orn.

Other verbs like this: wear (wear, wore, worn), tear (tear, tore, torn), bear (bear, bore, borne).

Test Yourself: Swore or Sworn?

Choose the correct answer for each sentence. Click Check to see if you are right.

Keep Going — You Are Building Something

You just learned swear, swore, sworn. That is one more irregular verb you will never get wrong again.

Did you notice that wear follows the exact same pattern? Wear, wore, worn — the ending changes the same way. But when do you say “I wore my jacket” and when do you say “I have worn my jacket”?

Next lesson: Wear, Wore, Worn — What Is the Past Tense of Wear?

Sources

1. Harper, Douglas. “Etymology of swear.” Online Etymology Dictionary.

2. Definition of swear from the Collins English Dictionary.