According to the search results, a bastard is a term that has evolved over time and has different meanings depending on the context. Here are some of the definitions:

• A person born to parents who are not married to each other.
• An insulting word used to describe a person who has behaved very badly.
• A general insult hurled towards a jerk or bad person.
• A person deserving of pity.
• Something irregular, inferior, spurious, or unusual.
• A mongrel, bastardized creature/cross.
• Of abnormal, irregular, or otherwise inferior qualities (size, shape, etc.) .

It is important to note that the term "bastard" has not always been offensive and was a relatively neutral term until the late 20th century when it began to take on its offensive status. The word is still used relatively neutrally in historical references and historical fiction but is usually considered offensive when used in present-day contexts to describe a child born to parents not married to each other.