argüir

A formal verb meaning to argue or contend a point with reasoning — common in legal, academic, or philosophical writing (el abogado arguyó que...). More formal and abstract than the everyday discutir.

• El fiscal arguyó que las pruebas eran insuficientes. — The prosecutor argued that the evidence was insufficient.
• Ella arguye que el proyecto no es viable económicamente. — She argues that the project isn't economically viable.
• Arguyeron durante horas sobre la interpretación de la ley. — They argued for hours about the interpretation of the law.

Treating argüir as a synonym of discutir (to argue/quarrel) in casual speech — argüir specifically means to put forward a reasoned argument or contention, not to bicker; it belongs to formal or written register.

Often confused with discutir.