The answer to this question depends on the context and the specific situation. Generally, it is essential to be considerate and mindful of the people around you when using a language they don't understand. Here are some factors to consider:
Context: Consider the context in which you are speaking Spanish. If you are in a social setting where the primary language spoken is English, it might be seen as impolite or exclusionary to have a conversation in Spanish that excludes others who don't understand the language.
Inclusion: In situations where everyone present can understand Spanish and there is no intention to exclude anyone, it may not be considered rude. However, it is still courteous to occasionally switch to the common language or offer translations if someone who doesn't speak Spanish is involved in the conversation.
Sensitivity: Be sensitive to the feelings of others. If someone expresses discomfort or feels left out due to not understanding the language being spoken, it is polite to adjust the conversation accordingly.
Professional settings: In professional settings, it is generally expected to communicate in the common language to ensure effective collaboration and understanding among team members. Speaking a language that some colleagues don't understand may hinder productivity and team dynamics.
Personal Relationships: When you're with friends or family who understand Spanish and are comfortable with the language, it may be more acceptable to use Spanish in conversations. However, if you're with friends who don't understand Spanish, it's courteous to switch to a language that everyone can understand to include them in the discussion.
In summary, it's not necessarily rude to speak Spanish in front of an English-speaking person who doesn't understand the language, but it's essential to be mindful of the situation and the feelings of those around you. Inclusion and effective communication are key, and making an effort to accommodate others who don't speak the language can go a long way in fostering positive relationships.