The social norms for how adults address each other can vary based on cultural and regional factors. In many modern Western cultures, it is increasingly common and generally acceptable for adults to address each other by their first names, regardless of age or gender. This informal way of address is often seen as a sign of familiarity, equality, and friendliness.
Using "Miss," "Mr.," or "Mrs." followed by the last name (e.g., Miss Smith, Mr. Johnson, Mrs. Anderson) is a more formal and traditional way of addressing someone, especially in professional settings or when there is a significant age difference between individuals. This form of address may be more common in certain conservative or hierarchical environments.
In casual or informal settings, using first names is typically the norm among adults, especially if they know each other well, are friends, or are colleagues in a less formal work environment. It fosters a sense of informality and approachability.
However, it's essential to be mindful of cultural and contextual differences. In some cultures or specific social settings, using titles like "Mr." or "Mrs." might be more customary and expected, and using first names could be seen as overly familiar or disrespectful.
As social norms continue to evolve, there is generally a trend toward greater informality in many interactions, but it's always wise to gauge the situation and the preferences of the people involved. If you are unsure about how to address someone, it's perfectly acceptable to ask them politely how they would like to be addressed. Respecting others' preferences is key to maintaining positive social interactions.