Informal refers to a style of communication that is relaxed and casual, often used in everyday conversations among friends and family. This type of interaction typically avoids strict grammar rules and formal vocabulary, making it more relatable and approachable. Informal language can include slang, colloquialisms, and contractions, which help convey a sense of familiarity and comfort. In various contexts, such as social gatherings or casual meetings, informal communication fosters a friendly atmosphere. It allows individuals to express themselves more freely, promoting openness and connection. However, it's important to recognize when informal language is appropriate, as it may not be suitable in professional or formal settings.