Definition & Meaning of "bastard"in English

What is the origin of the term "bastard" and how is it used?

"Bastard" is an English term that dates back to the Middle Ages (12th–13th century), originally referring to a child born out of wedlock. Over time, its meaning shifted figuratively to describe a person regarded as mean, unpleasant, or morally objectionable. The term is used in informal, confrontational, or critical contexts to insult someone's character or behavior. It is moderately to highly derogatory and can be offensive, though it is widely used in casual speech and media, sometimes even humorously or affectionately depending on context.