Which style of communication is generally considered to be less formal?

Oral style is generally considered to be less formal due to its conversational and spontaneous nature. In oral communication, speakers often use everyday language, engage in back-and-forth exchanges, and rely on vocal tones and body language to convey meaning. This informal approach fosters a sense of immediacy and connection between the speaker and listener, making it more accessible and relatable than written or formal styles.

In contrast, written style is typically more structured and adheres to grammar and punctuation rules, often making it less conversational. Formal style is characterized by adherence to strict conventions, often used in professional or academic contexts, emphasizing professionalism and seriousness. Semi-formal style, while more relaxed than formal, still maintains some structure and expectations, making it more formal than casual oral communication. Thus, oral style stands out as the informal option in this context.