Replica, Rep, UA, 1:1, Dupe: A Glossary of Fake Luxury Terms

Why the words matter

The market for fake luxury goods has its own vocabulary, and most of it exists to make a counterfeit sound like something else: a "rep", a "UA", a "1:1", a "factory reject". If you know what each word means, a listing tells you more than the seller intended. Several of these terms appear only where fakes are sold, so seeing one is a warning in itself.

This glossary gives a short definition of each term first, then what it means for you as a buyer. It explains the words so you can recognise a sales pitch. It does not point to sellers, and nothing here is legal advice.

The short version

Words for a fake

Replica

A replica is a copy of a branded product made by someone other than the brand. In luxury goods the word almost always means a copy that carries the brand's name or logo, which makes it a counterfeit.

For a buyer, "replica" is the polite word sellers use so they do not have to say "fake". A replica with the logo is a counterfeit whether it costs a few dollars or a few thousand. A seller who calls an item a replica is being more honest than most, but the item is still not the brand's.

Rep

"Rep" is short for replica, used in sneaker and streetwear communities and on social media ("reps", "rep shoes", "rep bags"). It means exactly the same thing as replica.

For a buyer, the shortening matters because it is how the word hides in plain sight. A listing or comment that mentions reps is talking about counterfeits.

Counterfeit

A counterfeit is a product that carries a brand's trademark (its name, logo or another registered mark) without the brand's permission, made to look like the genuine product. This is the legal term, and making, importing or selling counterfeits is illegal in almost every country.

For a buyer, this is the category that matters most. If an item uses the logo and the brand did not make it, it is a counterfeit, no matter what the listing calls it.

Knockoff

A knockoff is a copy of another product's design. In everyday speech the word is used loosely, for anything from a cheap lookalike without a logo to a full counterfeit with one.

For a buyer, "knockoff" tells you little until you look at the item. A knockoff with the brand's logo is a counterfeit; one without it is closer to a dupe.

Superfake

A superfake is the top tier of counterfeit, built from better materials and copied from genuine pieces so that it survives close inspection by a buyer. Sellers often call the same tier "1:1" or "mirror quality".

For a buyer, a superfake is still a counterfeit, and it is the kind most likely to pass the tips buyers read online. We explain what a superfake is and what still catches one in a separate guide.

Words that grade a fake

1:1

"1:1" (one-to-one) is a seller's claim that a counterfeit is an exact copy of the genuine item, matching it point for point. "1:1 replica" and "1:1 quality" are common in listings.

For a buyer, "1:1" is marketing, not a measurement. No copy matches the genuine item in every detail, and nothing stands behind the claim. An item described as 1:1 is a counterfeit by the seller's own description.

Mirror quality

"Mirror" or "mirror quality" means the same as 1:1: a claim that the copy is a mirror image of the real thing.

For a buyer, it is another label for a high-priced counterfeit.

AAA and other grades

AAA, AAA+, "A1", "top grade", "grade 1" and "premium" are quality labels that fake sellers attach to their own goods. There is no standard behind them; each seller uses them as it likes.

For a buyer, a grade tells you two things: the item is a counterfeit, and the seller wants you to see it as a better one. A higher grade means a higher price, not a genuine item.

Batch

In replica communities a batch is a production run of fakes from one maker, often named after that maker so buyers can compare versions of the same counterfeit model. People argue over which batch is closest to retail.

For a buyer, a batch name anywhere in a listing or a conversation means the item is a replica. The word is different from a genuine batch code, the production number some brands print inside a product; our guide to the Adidas batch code, QR code and barcode explains that kind.

Factory names

Replica sellers and forums often refer to batches by short letter codes, abbreviations that stand for the factory or workshop said to have made them. These names exist to sell fakes and to compare counterfeit versions.

For a buyer, a factory code on a listing is the clearest admission that the item is a replica. We do not name or rank them, and a buyer has no reason to learn which is which: a factory code never belongs on a genuine item.

Words that claim a fake is real

UA (unauthorized authentic)

"UA" stands for "unauthorized authentic". The pitch is that the item was made in the same factory as the genuine product, from the same materials, and sold out the back door or from an overrun.

For a buyer, UA is a sales pitch, not a category of genuine goods. Brands control their production and their trademarks; an item the brand did not authorise is not authentic, even in the rare case where it came from a factory that has worked for the brand. In practice, "UA" is a label for counterfeits, and it is used because it sounds safer than "replica". Treat it exactly as you would the word "fake".

Factory reject and B-grade

"Factory reject", "B-grade" and "seconds" claim that an item is genuine but failed the brand's quality control, which is why it is cheap or flawed.

For a buyer, the phrase does two jobs for a seller: it explains a low price and it explains away the flaws that would otherwise mark the item as fake. The seller cannot prove the story, so treat a "factory reject" luxury item as unverified and have it checked before you pay.

Words for legal lookalikes

Dupe

A dupe (short for duplicate) is a product that copies the look of a well-known item, such as its shape, colour or style, without using the brand's name or logo. Dupes are sold openly under their own brand, often in mainstream shops.

For a buyer, the difference between a dupe and a fake is the trademark. A dupe does not pretend to be the brand; a counterfeit does. Dupes are generally legal where they avoid the brand's trademarks, but not every lookalike is safe: some designs are protected by design rights, trade dress or similar laws, and brands do sue over close copies. Watch for sellers who use "dupe" for an item that carries the logo. That is not a dupe; it is a counterfeit with a friendlier word.

Inspired by

"Inspired by", "in the style of" and "look for less" describe lookalikes sold under the seller's own name. They mean the same as dupe.

For a buyer, an honest "inspired by" item says what it is and does not use the logo. If an "inspired" item carries the brand's name or monogram, the wording is cover for a counterfeit.

Buying-community slang

Legit check (LC)

A legit check (LC) is a request to have an item verified as genuine, usually by posting photos in a forum or app, or by sending them to an authentication service.

For a buyer, a legit check is only as good as the person doing it. Ask someone independent of the sale who compares the item against verified references of the same model; never rely on the seller's own "LC" or a friend of the seller.

QC photos

QC stands for quality control. In replica buying, QC photos (or "QC pics") are the photos a fake seller or buying agent sends before shipping, so the buyer can approve the counterfeit or ask for another.

For a buyer, "QC photos" in a listing or chat is replica jargon. Genuine resellers send detailed photos too, but they do not call them QC.

W2C and GP

W2C means "where to cop", a request for where to buy something; in replica communities it means where to buy a fake. GP means "guinea pig", the first buyer to order a new batch so others can judge it.

For a buyer, both are signs you are in a replica space. If a "pre-owned" seller uses this language, the item came from the same place.

Authentic vs genuine

Authentic and genuine mean the same thing for a branded item: made by the brand, or under its authority, and sold as such. Sellers use them as claims ("100% authentic", "guaranteed genuine"), and the words prove nothing on their own.

One trap: "genuine leather" is a materials term meaning the item is made of real leather (often a lower grade). It says nothing about who made the product. A bag can be genuine leather and a counterfeit at the same time.

What the vocabulary tells you about a listing

• Words that admit a fake. Replica, rep, 1:1, mirror, AAA, batch, factory codes, QC photos, W2C and GP all come from the counterfeit trade. If they appear, the item is a fake.
• Words that dress up a fake. UA, factory reject, B-grade and overrun claim a genuine origin without proof. Treat them as fake until verified.
• Words for legal lookalikes. Dupe and "inspired by" are honest when the item has no logo. If it carries the brand's name or logo, it is a counterfeit.
• Words that claim authenticity. Authentic and genuine are claims; check the item.

On the legal side, kept general: selling counterfeits is illegal in almost every market, and buying them can carry consequences in some countries, such as customs seizure or fines. Selling a dupe is generally legal unless it copies protected trademarks or designs. Laws vary by country; this is not legal advice. If you have already paid for something sold as genuine and it turns out not to be, our guide on how to get a refund for a fake designer item walks through the steps.

When to get a professional opinion

If a listing uses any of the words above, or the price looks too good for the model, have the item checked before you pay or before your buyer protection runs out. LuxeDetect reviews the photos you send against verified references for that brand and model and returns a written verdict. Genuine items receive a Certificate of Authenticity, and a fake verdict gives you something specific to take to the platform or your card issuer. You can submit an item for authentication at any time.

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