The phrase "de común acuerdo" is commonly used in the Spanish language, especially in legal contexts. It is used in both oral and written speech, predominantly in formal settings.
We decided to sell the house by mutual agreement.
El contrato fue firmado de común acuerdo.
The phrase "de común acuerdo" is not typically part of idiomatic expressions. However, it is often used to express mutual agreement or consensus in legal or formal contexts.
The phrase "de común acuerdo" comes from the combination of the words "común" (common) and "acuerdo" (agreement). Together, they convey the idea of reaching an agreement commonly or mutually.