How to Say "improper" in Spanish
The most common Spanish word for “improper” is “inapropiado” — use 'inapropiado' when referring to conduct, speech, or behavior that is not suitable or fitting for a particular social setting or situation.
inapropiado
ee-nah-pro-pyah-dohinapɾoˈpjaðo

Examples
Su comentario fue totalmente inapropiado para la oficina.
His comment was totally inappropriate for the office.
Es un momento inapropiado para hacer bromas.
It is an unsuitable time to make jokes.
Llevar ropa deportiva a una boda es inapropiado.
Wearing sports clothes to a wedding is inappropriate.
Matching the Noun
This word changes its ending to match the person or thing you are talking about. Use 'inapropiado' for masculine things (el momento) and 'inapropiada' for feminine things (la conducta).
Gender Agreement
Mistake: “La situación es inapropiado.”
Correction: La situación es inapropiada. Because 'situación' is feminine, the ending must change to -a.
incorrecto
een-koh-RREK-tohiŋkoˈrekto

Examples
Su comportamiento en la reunión fue incorrecto.
His behavior at the meeting was inappropriate.
Es incorrecto hablar con la boca llena.
It is improper to talk with your mouth full.
Un trato incorrecto a los clientes puede dañar la empresa.
Improper treatment of customers can damage the company.
Describing actions with 'Es'
When you want to say 'It is wrong to...', use 'Es incorrecto' followed by the action in its base form (like 'Es incorrecto mentir').
Using 'incorrecto' for 'rude'
Mistake: “Él es un hombre incorrecto.”
Correction: Él es un hombre maleducado. Use 'incorrecto' to describe an action or behavior, but use 'maleducado' to describe a person's general character.
irregular
ee-rre-goo-larireɣuˈlaɾ

Examples
La policía investiga una situación irregular en la empresa.
The police are investigating an improper situation at the company.
Muchos inmigrantes están en situación irregular.
Many immigrants are in an undocumented/unauthorized status.
Hubo un manejo irregular de los fondos públicos.
There was a mishandling of public funds.
Softening Legal Terms
In Spanish, 'irregular' is often used as a slightly softer or more technical way to say 'illegal' when talking about paperwork or immigration status.
Inapropiado vs. Incorrecto
Related Translations
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