Whats the Past Tense of Lose: Understanding Verb Conjugation
Quick Answer
The past tense of lose is lost. “I lost my keys yesterday.” It is the same for every person — I lost, you lost, she lost, they lost.
Lose, Lost, Lost — See the Pattern
Look at these sentences. Can you see how lose changes?
- I do not want to lose my phone. (now / future)
- She lost her wallet at the shop. (past)
- We have lost the game three times. (with have/has/had)
- He loses things every day. (now, with he/she/it)
Did you see the pattern? Lose becomes lost in the past. It is the same with have, has, or had — always lost.
| Form | Word | Example |
|---|---|---|
| Now (base form) | lose | I lose my keys a lot. |
| Now (he/she/it) | loses | She loses her phone often. |
| Past | lost | They lost the match. |
| With have/has/had | lost | I have lost my bag. |
When to Use Lose and When to Use Lost
This is easier than you think. You only need to know two things:
Use lose when you talk about now or the future:
- I do not want to lose my job.
- Please do not lose this ticket.
- She always loses her glasses. (he/she/it adds -s)
Use lost when you talk about the past:
- I lost my keys yesterday.
- She has lost her bag.
- They had lost hope before help came.
Easy way to remember: Ask yourself — did it already happen? If yes, use lost. If it has not happened yet, use lose.
The Rule in One Line: Lose is for now. Lost is for the past. Always.
How to Use Lost in Everyday English
Here are sentences you might use in real life:
- I lost my phone on the bus this morning. (it happened today)
- We lost the football match 3–1. (the game is finished)
- She has lost a lot of weight this year. (with “has” — up to now)
- They lost their way in the city. (they could not find the road)
- I think I have lost my wallet. Can you help me look? (with “have” — just now)
You are doing great. Now let us look at the mistakes many learners make.
The Most Common Mistakes With Lose and Lost
Even advanced learners sometimes write “losed” or “losted” — so if you have made this mistake, you are not alone. Many people also mix up lose and loose. Do not worry — let us fix all of these right now.
✗ I losed my keys yesterday.
✓ I lost my keys yesterday.
✗ She has losted her bag.
✓ She has lost her bag.
✗ He losts things all the time.
✓ He loses things all the time.
How to remember: Lose is a special verb. It does not add -ed like regular verbs. It changes completely: lose → lost. Think of it like this — the “se” gets lost and turns into “st.”
Lose vs Loose: These look very similar but mean different things. Lose (one o) means you cannot find something. Loose (two o’s) means not tight, like loose trousers. If you can say “not tight,” use loose. If you can say “cannot find,” use lose.
Test Yourself: Lose or Lost?
Choose the correct answer for each sentence. Click Check to see if you are right.
1. She _______ her phone at the mall yesterday.
2. I do not want to _______ this game!
3. They have _______ every match this season.
4. He always _______ his things. It happens every week!
5. We _______ the map last night, so we could not find the restaurant.
Keep Going — You Are Building Something
You just learned the past tense of lose — and you know it will never be “losed” again. That is one more irregular verb you will never get wrong.
But what about the opposite of lose? When you win something, what is the past tense? Is it winned? It is not — and the answer follows the same kind of pattern you just learned.
Next lesson: Past Tense of Win — Win vs Won
Source
Harper, Douglas. “Etymology of lose.” Online Etymology Dictionary, https://www.etymonline.com/word/lose
“Lose.” TheFreeDictionary.com https://idioms.thefreedictionary.com/lose
My name is Khamis Maiouf. I am the creator of the English Teacher Site, dedicated to providing valuable resources and insights for students around the world. With a passion for education and a commitment to helping students enhance their skills, I aim to make English teaching more effective and enjoyable for both educators and students.
