What’s the past tense of “lose”?
As an irregular verb, the past tense of lose can leave you feeling lost (and if you’re very confused, you might even feel “losed”). If that’s the case, there’s no need to get a map or compass out—you’re in the right place. The past tense and past participle forms of the verb lose are both lost.
I lost my keys.
She has lost a lot of weight.
I losed my way.
He has lose his temper.
Lose is a very versatile verb. In fact, it can even be used as an adjective. With its multiple meanings and applications, the correct forms and usage of lose are definitely worth mastering.
The short answer
To lose can mean many things: “to miss from one’s possession or from a customary or supposed place,” “to fail to win,” “to wander or go astray from,” or “to get rid of.” In everyday conversation, to “lose it” refers to losing one’s temper, or one’s ability to think clearly.
| present | past | future | |
| simple | I lose | I lost | I will lose |
| continuous | I am losing | I was losing | I will be losing |
| perfect | I have lost | I had lost | I will have lost |
| perfect continuous | I have been losing | I had been losing | I will have been losing |
To lose is in the present tense: They lose every chess match.
Lost is the simple past: I lost my cookbook!
Lost is the past participle: Lost items should be turned in to the security desk.
Is lose a regular or irregular verb?
Lose is an irregular verb because its past tense form, lost, is an irregular suffix. This means that it does not end in -ed. As long as you know the past tense form of a verb, you can identify whether a verb is regular or irregular by checking its suffix. Anything that ends in -ed is regular, and anything else is irregular.
| base verb | past tense | past participle |
| spit | spat | spat |
| sit | sat | sat |
| tell | told | told |
| win | won | won |
| shoot | shot | shot |
| lose | lost | lost |
Past participle vs. the past tense of “lose”
Despite its many meanings, the simple past tense form of lose can only be used in one way: as an action completed in the past. Conversely, the past participle form of lose has multiple functions…As a past participle, lost does not indicate tense on its own— it must first be paired with an auxiliary verb. Lost usually follows the auxiliary verbs have, had, and was.
“He was lost and terrified.”
“She has lost the documents.”
“That’s it— I’ve officially lost it.”
The past participle form of a verb may also behave like an adjective. Lost is very frequently used in this manner. An auxiliary verb is not always necessary when using the past participle as an adjective (as demonstrated in the examples below), but they may still make an appearance (see the first sentence in the group of examples above).
“The lost customer wandered in hopes of finding an employee.”
“Lost items are always in the last place you look!”
“Her lost hat was found by the swing set.”
Examples of the verb lose in context
1. If you don’t stop clicking your pen, I’m going to lose my mind!
2. They practiced every day, for they did not want to lose the game.
3. You won’t lose your way if you have a map!
4. Win or lose, what matters is that we tried our best.
5. She always loses her headphones.
The past tense of “lose,” associate it with the word “lost”—they sound alike and are the same word, just in different tenses.
The past tense lost used in sentence examples
1. He lost the staring contest when she clapped her hands.
2. My favourite team lost to some amateurs.
3. I lost myself in the soft music and beautiful architecture.
4. She lost her dog last week.
5. He lost the project that he had spent weeks working on!
Sentence examples of the participle lost
1. The lost cat is an orange tabby.
2. No one was at the party because they had all gotten lost on the way there.
3. He couldn’t stand thinking about all he had lost.
4. Don’t bother trying; it’s a lost cause.
5. I thought my glasses were lost, but I was actually wearing them the entire time!
Idioms with lose
| Phrase | Meaning |
|---|---|
| to lose your marbles (lose your mind/out of it) | To be of common or lower social standing/class. |
| lose your patience | To become irritated or annoyed at someone/something. |
| to lose one’s grip on something | To feel one does not have a handle on a situation. |
| nothing to lose sleep over | Meaning that it’s not something to worry about. |
| lose train of thought | To forget what you’re thinking about. |
| lend your money and lose your friend | Don’t mix friends and money together. |
| lose one’s doughnuts | To vomit profusely. |
| a tale never loses in the telling | Meaning stories become exaggerated/embellished with each retelling. |
| lose the thread/the drift | Said when one is not following the conversation/discussion. |
| you must lose a fly to catch a trout | Small sacrifices are sometimes made for bigger gains. |
| win some, lose some | Sometimes you win and sometimes you lose. |
| you snooze, you lose | If you wait on an opportunity you might miss out. |
Origin of the word/verb lose
From etymology online on lose (v.):
Old English losian “be lost, perish,” from los “destruction, loss”. The Germanic word is from PIE *leus-, an extended form of root *leu- “to loosen, divide, cut apart.
Other commonly confused verb tenses
- What’s the past tense of spread?
- What’s the past tense of lead?
- What’s the past tense of choose?
- What’s the past tense of fly?
- What’s the past tense of lay?
- What’s the past tense of drive?
- What’s the past tense of draw?
Learn more about verbs
Work Sheet
According to the blog post, what is the correct simple past tense form of the verb “lose”?
The blog post explains that “lose” is an irregular verb. What is the characteristic of irregular verbs mentioned in the post?
Which form of “lose” is used with auxiliary verbs like “have”, “had”, or “was” to form perfect tenses or passive voice?
Which of the following sentences uses the correct simple past tense form of “lose” as shown in the blog post examples?
Besides being a verb form, the past participle “lost” can frequently function as what part of speech, according to the post?
Fill in the blank with the correct simple past tense: “Yesterday, they ________ the game by one point.”
Fill in the blank with the correct past participle form: “She has ________ a lot of weight this year.”
Which of the following would fill the blank with an incorrect form, as mentioned in the blog post? “I ________ my way on the hike.”
Fill in the blank with the correct form used as an adjective, referring to the past participle: “The police are looking for a ________ child.”
Fill in the blank with the correct form for the past perfect tense: “By the time I arrived, they had already ________ hope.”
Frequently Asked Questions
What’s the past tense of ‘lose’?
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Is ‘lose’ a regular verb?
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Is ‘losed’ a correct form of ‘lose’?
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How is past participle ‘lost’ used?
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How is simple past ‘lost’ used?
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Yash, D. "What’s the Past Tense of Lose?." Grammarflex, Jun 7, 2025, https://www.grammarflex.com/whats-the-past-tense-of-lose/.
Sources
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“Lose.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lose. Accessed 21 Jan. 2023.
