Nu returnez produsul fără să completez formularul de retur.

Nu is the standard Romanian word for not. It usually goes directly before the verb:

• Nu returnez = I do not return
• Nu completez = I do not fill out / complete

So Nu returnez produsul... means I do not return the product...

Returnez is the 1st person singular present tense form of the verb a returna, meaning to return.

So:

• returnez = I return
• nu returnez = I do not return

The ending -ez is common in some Romanian verbs in the I form.

Examples:

• lucrez = I work
• formez = I form
• returnez = I return

Produsul means the product, while produs means a product or just product.

Romanian often puts the definite article at the end of the noun instead of using a separate word like English the.

So:

• produs = product / a product
• produsul = the product

This is a very important feature of Romanian grammar.

Other examples:

• formular = form
• formularul = the form
• client = customer
• clientul = the customer

After fără in this kind of sentence, Romanian commonly uses să + verb.

So:

• fără să completez = without filling out / without my filling out

The word să is a marker that often introduces the subjunctive in Romanian.

In English, we use without + -ing:

• without filling out the form

Romanian does not use the same structure here, so it says:

• fără să completez formularul

This is one of the most natural ways to express without doing something.

Yes. After să, the verb is in the subjunctive, but in the 1st person singular, the form is often identical to the present indicative.

So:

• completez = I fill out / I complete
• să completez = that I fill out / for me to fill out / to fill out, depending on context

The form looks the same, but să tells you it is functioning as a subjunctive construction.

Compare:

• Completez formularul. = I fill out the form.
• Trebuie să completez formularul. = I have to fill out the form.
• Fără să completez formularul... = Without filling out the form...

A completa literally means to complete, but in many contexts it is also the normal Romanian verb for to fill out a form.

So:

• completez formularul = I fill out the form

Even though English often prefers fill out, Romanian naturally uses a completa for forms, documents, applications, and similar things.

Examples:

• completez un formular = I fill out a form
• completez cererea = I fill out the application/request

Formularul de retur means the return form.

Breaking it down:

• formularul = the form
• de retur = for return / of return

Romanian often uses de + noun where English uses a noun directly before another noun.

So English:

• return form

Romanian:

• formular de retur

With the definite article:

• formularul de retur = the return form

This pattern is very common:

• bilet de avion = plane ticket
• sală de sport = gym
• formular de înscriere = registration form

Because retur is part of a de-phrase modifying the main noun.

The main noun is formularul = the form.
Then de retur describes what kind of form it is: a return form.

So Romanian says:

• formularul de retur = the return form

Not:

• formularul de returu(l)

This is normal. The definiteness goes on the main noun, not usually on the noun after de.

Yes, that is very close in meaning.

Literally, the Romanian says:

• I do not return the product without filling out the return form

In natural English, that often overlaps with:

• I don't return the product unless I fill out the return form

So the idea is that filling out the return form is a necessary condition before returning the product.

This word order is neutral and natural.

It goes roughly like this:

• Nu returnez = I do not return
• produsul = the product
• fără să completez formularul de retur = without filling out the return form

Romanian word order is somewhat flexible, but this version is straightforward and standard.

You could move parts around for emphasis, but the given order is probably the most natural for a learner to use.

Retur is a common Romanian noun, widely used in practical contexts like shopping, shipping, tickets, and e-commerce. It means return.

Examples:

• formular de retur = return form
• politică de retur = return policy
• cerere de retur = return request

Even if a learner expects a structure closer to English, retur is a normal and useful word to know.

Yes, fără a completa is also possible and means essentially the same thing:

• Nu returnez produsul fără să completez formularul de retur.
• Nu returnez produsul fără a completa formularul de retur.

However, fără să completez often sounds more natural and conversational in everyday speech.

Very roughly:

• fără să completez = more common in normal spoken Romanian
• fără a completa = slightly more formal or written

Both are correct.