Quieren impugnar el acuerdo.

They want to challenge the agreement formally.

Breakdown of Quieren impugnar el acuerdo.

• querer: to want
• el acuerdo: the agreement
• impugnar: to challenge formally

Questions & Answers about Quieren impugnar el acuerdo.

Why is quieren used here, and what form is it?

Quieren is the 3rd person plural present indicative form of querer.

So it can mean:

• they want
• you all want if the subject is ustedes

In this sentence, without more context, quieren could refer to ellos, ellas, or ustedes.

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Why is there no subject pronoun like ellos or ustedes?

Spanish often leaves out subject pronouns because the verb ending already gives that information.

So instead of saying:

• Ellos quieren impugnar el acuerdo

Spanish very naturally says:

• Quieren impugnar el acuerdo

This is completely normal. The subject is understood from context.

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Why is impugnar in the infinitive instead of a conjugated form?

Because after querer, Spanish normally uses:

• querer + infinitive

So:

• quieren impugnar = they want to challenge / contest

You do not say quieren impugnan.

This is the same pattern as:

• quiero comer = I want to eat
• quieren salir = they want to leave

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