Loosing is technically the present participle of the rare verb to loose (release). However, in almost all modern contexts, 'loosing' is a misspelling of 'losing' (present participle of lose). If you write 'loosing,' readers will assume it is an error.

Yes, but rarely. As a verb, to loose means to release: 'The archer loosed an arrow.' In modern everyday English, the more common verbs are release or set free. Most learners will use loose only as an adjective.

Lose vs Loose — What's the Difference?

Q: How do I remember lose vs loose?

The double O in loose makes it feel relaxed and spacious — like a loose garment. Single O in lose is tight. Trick: 'I lose one O from loose when I lose something.' If you can replace the word with 'not tight,' use loose; if you can replace it with 'misplace,' use lose.

Q: What does "at a loose end" mean?

At a loose end (British) or at loose ends (American) means having nothing to do, feeling unoccupied: 'I'm at a loose end this weekend.' Uses loose (adjective, not tied). Do not write 'at a lose end' — that is a misspelling.

Q: What is a "loose cannon"?

A loose cannon is an idiom for an unpredictable, uncontrolled person likely to cause problems. Origin: a cannon that broke loose on a ship's deck was extremely dangerous. Always spelled loose (adjective).

Q: What is the past tense of lose?

The past tense of lose is lost: 'I lost my wallet.' The past participle is also lost: 'We have lost three matches.' The present participle is losing. Never say 'losed' — this is not a word.

Q: Do native speakers confuse lose and loose?

Yes — writing 'loose' when the verb 'lose' is meant is one of the most frequent spelling errors on the internet and social media. Knowing the rule (one O = verb lose; two O's = adjective loose) gives a significant advantage in professional writing.

Q: What are common collocations with lose?

Common collocations: lose weight, lose a match, lose your keys, lose your temper, lose your mind, lose track of time, lose interest, lose confidence. In business: lose market share, lose a client. Always one O — lose, lost, losing.

Vocabulary A2–B1 5 min read Updated 10 June 2026

Quick answer: Lose (one O) is a verb: I don't want to lose my keys; we might lose the match. Loose (two O's) is mainly an adjective meaning not tight or free: a loose screw; loose clothing. Memory trick: loose has an extra O because it is so oozy and relaxed — not tight. Lose only has one O because it is streamlined and fast.

Comparison Table

Word	Part of Speech	Meaning	Example
lose	verb	to fail to keep, win, or find; to be defeated	I always lose* my glasses.*
loose	adjective / verb	not tight, free, not firmly fixed; to release	The button on my shirt is loose.

Using Lose (Verb)

Lose is an irregular verb. It means to fail to keep something, to fail to win, to be deprived of, or to fail to find something. The past tense is lost.

I tend to lose things when I'm in a rush.

They could lose the championship if they don't perform well.

She was afraid she might lose her job.

He lost his passport at the airport.

Lose as an Irregular Verb

Present: lose / loses
Past simple: lost
Past participle: lost
Present participle: losing

Using Loose (Adjective / Verb)

As an adjective, loose means not tight, not firmly fixed, or free from constraint. As a verb (less common), to loose means to release or set free — but this is archaic or literary.

The wire was loose at the back of the plug.

She prefers wearing loose clothing in summer.

The dog broke loose and ran into the park.

There is a loose interpretation of the rules here.

Common Phrases with Loose

on the loose (escaped, free)
loose end (an unresolved matter)
cut loose (break free, relax without restraint)
loose cannon (an unpredictable, uncontrolled person)
at a loose end (with nothing to do)

Memory Trick

The double O in loose makes the word feel relaxed and spacious — like a loose garment that has room. The single O in lose is tight and efficient — like the streamlined way you lose something quickly. Or: think "I lose one O from loose when I lose something." The loss of one O represents the loss itself.

Common Mistakes

Mistake 1 — Using loose as the verb

✗ We don't want to loose the game.
✓ We don't want to lose the game.

Mistake 2 — Using lose as the adjective

✗ The screw is a bit lose.
✓ The screw is a bit loose.

Mistake 3 — Writing "loosing" when you mean "losing"

✗ We are loosing customers every day.
✓ We are losing customers every day.

Mini-Quiz

Test your understanding with an interactive exercise:

Grammar Quiz — choose the correct word in multiple-choice questions.
Cloze Dropdown — fill in the blank with lose or loose.

Frequently Asked Questions

What is the difference between lose and loose?

Lose (one O) is a verb meaning to fail to keep, win, or find something: "I always lose my keys"; "We might lose the match." Loose (two O's) is mainly an adjective meaning not tight, not firmly fixed, or free: "a loose button"; "loose clothing"; "the dog broke loose." The one-O vs two-O spelling is the key difference. Writing "loose" when you mean the verb "lose" is one of the most common spelling errors in English.

How do I remember lose vs loose?

The double O in loose makes the word feel relaxed and spacious — like a loose garment. The single O in lose is tight and streamlined. Another trick: "I lose one O from loose when I lose something" — the loss of the O represents the act of losing. Or: if you can replace the word with "not tight," use loose (two O's). If you can replace it with "misplace" or "fail to win," use lose (one O).

Is "loosing" a word?

Loosing is technically a word — it is the present participle of the verb to loose (meaning to release or set free): "loosing an arrow from a bow." However, this use is rare and archaic. In almost all modern everyday contexts, "loosing" is a misspelling of "losing" (present participle of lose): "We are losing ground." If you write "loosing," readers will likely assume it is an error for "losing."

What does "at a loose end" mean?

At a loose end (British English) or at loose ends (American English) means having nothing specific to do, feeling unoccupied or aimless: "I'm at a loose end this weekend — any plans?" The phrase uses loose as an adjective meaning free or unattached — like a rope end that is not tied to anything. It is a common idiom in conversational English. Do not write "at a lose end" — that is a misspelling.

What is a "loose cannon"?

A loose cannon is an idiom for a person who is unpredictable, uncontrolled, and likely to cause problems or embarrassment. The origin is nautical: a cannon that broke loose on a ship's deck was extremely dangerous, as it could roll around and damage everything. Used figuratively: "The new MP is a bit of a loose cannon — you never know what he'll say next." Always spelled loose (adjective), never lose.

What is the past tense of lose?

The past tense of lose is lost: "I lost my wallet yesterday"; "She lost the competition." The past participle is also lost: "We have lost three matches in a row"; "It was lost in the post." The present participle is losing: "We are losing time." Note: never say "losed" — this is not a word. Lose/lost/lost follows an irregular conjugation pattern like choose/chose/chosen.

Can loose be a verb?

Yes, but it is rare and literary. As a verb, to loose means to release, set free, or let go: "The archer loosed an arrow"; "He loosed the dogs from their chains." In modern everyday English, the more common verbs are release, set free, or unleash. The past tense is loosed: "She loosed her grip on the rope." Most learners will not need loose as a verb — in everyday contexts, loose is an adjective and lose is the verb.

Do native speakers confuse lose and loose?

Yes — writing "loose" when the verb "lose" is meant is one of the most frequently seen spelling errors on the internet, social media, and even published articles. "We might loose this game" is an extremely common mistake made by native speakers. Knowing the rule (one O = verb lose; two O's = adjective loose) gives you a significant advantage in professional and academic writing where such errors damage credibility.

What is the difference between lose and loosen?

Lose (one O) means to fail to keep or win. Loosen (two O's, from loose + -en) means to make something less tight or to become less tight: "loosen a bolt," "loosen your tie," "the knot loosened over time." Loosen is the verb derived from the adjective loose — it means to make loose or cause to become loose. Do not confuse loosen with lose: "I need to loosen my shoelaces" (make them less tight); "I always lose my shoelaces" (misplace them) — very different meanings.

What are common collocations with lose?

Common collocations: lose weight, lose a match/game, lose your keys/phone/wallet, lose your temper, lose your mind, lose track of time, lose interest, lose confidence, lose control, lose sight of. In business: lose market share, lose revenue, lose a client. The opposite of lose in competitive contexts is win; the opposite in possessive contexts is find or keep. Remember: always one O — lose, lost, losing.

Lose vs Loose — What’s the Difference?