Comprobamos la fidelidad y la exactitud.

Comprobamos is the 1st person plural form of comprobar, so it means we check / we verify in the present tense.

It can also, in other contexts, be the 1st person plural preterite (we checked / we verified), because the form is spelled the same. Normally, the surrounding context tells you which meaning is intended.

Present:

• comprobamos = we check / we are checking

Preterite:

• comprobamos = we checked

In a standalone sentence like this, learners often understand it first as a present-tense statement.

In Spanish, subject pronouns like yo, tú, nosotros are often left out because the verb ending already shows who is doing the action.

So:

• Comprobamos la fidelidad y la exactitud.
• Nosotros comprobamos la fidelidad y la exactitud.

both mean the same thing, but the version without nosotros is more natural unless you want emphasis or contrast.

For example:

• Nosotros comprobamos la fidelidad, no ellos.
  = We verify the fidelity, not them.

Spanish often repeats the article when talking about two separate nouns, especially when each noun is being treated individually.

So:

• la fidelidad y la exactitud

is completely natural and standard.

You may sometimes see a single article with coordinated nouns in Spanish, but here repeating la sounds clear and normal.

It helps show that these are two distinct things being checked:

• the fidelity
• and the accuracy

They are feminine because they are nouns that take the feminine article la:

• la fidelidad
• la exactitud

A very useful pattern is that many Spanish nouns ending in -dad, -tad, -tud, and -umbre are feminine.

Examples:

• la ciudad
• la libertad
• la exactitud
• la costumbre

So once you see fidelidad and exactitud, it is quite natural to expect them to be feminine.

Even if the overall meaning is already clear, a learner may want to know how these two nouns differ.

• fidelidad often means faithfulness, fidelity, or faithful reproduction
• exactitud means accuracy, exactness, or precision of correspondence

Together, they suggest something like checking whether something is both:

• faithful to the original
• accurate/correct in detail

In some contexts, especially technical or translation-related ones, fidelidad is about how true something is to a source, while exactitud is about correctness and precision.

Sometimes yes, but not always with exactly the same nuance.

• exactitud = exactness, accuracy, correctness
• precisión = precision

They are related, but exactitud often focuses more on whether something is correct, while precisión can focus more on fineness, detail, or exact measurement.

So comprobamos la fidelidad y la exactitud sounds very natural if the idea is checking that something is both faithful and accurate. Replacing exactitud with precisión might slightly shift the meaning.

Because la fidelidad y la exactitud are the direct objects of the verb comprobar, and direct objects in Spanish normally do not take a unless they refer to a specific person (or sometimes a personified being). This is called the personal a.

Here, fidelidad and exactitud are abstract things, not people, so there is no a.

Compare:

• Comprobamos la exactitud.
• Vemos a María.

The second sentence uses a because María is a person.

No. They are related in form, but they usually mean different things.

• comprobar = to check, verify, confirm
• probar = to try, test, taste, or try on

Examples:

• Comprobamos los datos. = We check/verify the data.
• Probamos el programa. = We test the program.
• Pruebo la sopa. = I taste the soup.
• Se prueba la chaqueta. = He/She tries on the jacket.

So in your sentence, comprobamos clearly means we verify/check.

Yes, Spanish word order is somewhat flexible, but the standard order here is very natural:

• Comprobamos la fidelidad y la exactitud.

You could sometimes move things around for emphasis, but this neutral order is the most common:

verb + object

For example, in a more marked style you might see:

• La fidelidad y la exactitud las comprobamos después.

But that changes the emphasis and structure. For ordinary use, the original sentence is the best model.

A rough pronunciation is:

• com-pro-BA-mos

The stress falls on ba.

In IPA (roughly, depending on accent):
/kom.pɾoˈβa.mos/

A few useful pronunciation notes:

• b and v are pronounced very similarly in standard Spanish.
• The r in pro is a single tap, not a strong rolled rr.
• The final -mos is clearly pronounced.

Roughly:

• fidelidad → fee-deh-lee-DAD
• exactitud → eg-sak-tee-TUD or ek-sak-tee-TUD, depending on speech and region

Stress:

• fide-li-DAD
• exacti-TUD

Useful note: both words have stress on the last syllable, which is common in many Spanish nouns ending in -dad and -tud.

Spanish normally uses y for and:

• la fidelidad y la exactitud

The conjunction changes to e only before words that begin with an i sound:

• padres e hijos
• España e Italia

But exactitud begins with an e sound, not an i sound, so y is correct.

Yes. As a verb form, comprobamos can be either:

• present: we verify / we check
• preterite: we verified / we checked

Written Spanish sometimes has these identical forms. Context usually makes the meaning clear.

For example:

• Cada día comprobamos la exactitud de los datos.
  = present: Every day we check the accuracy of the data.

• Ayer comprobamos la exactitud de los datos.
  = preterite: Yesterday we checked the accuracy of the data.

So if your sentence appears by itself, the tense may be a small point of ambiguity.

It is neutral in tone. Nothing in the sentence is especially formal or especially casual.

• comprobamos is standard, widely used Spanish
• fidelidad and exactitud are somewhat careful or technical vocabulary, so the sentence may sound a bit professional, academic, or technical, depending on context

So the grammar itself is neutral, but the vocabulary may fit contexts like:

• quality control
• translation
• science
• data checking
• audio/image reproduction