1. Born out of wedlock: This is the most common meaning of "illegitimate." It refers to a child whose parents were not married at the time of their birth.
2. Not authorized or legal: This meaning is more general and can be applied to anything that is not done according to the law or proper procedures. For example, an "illegitimate business" might be one that operates without the proper licenses or permits.
3. Not genuine or valid: This meaning refers to something that is false or not authentic. For example, an "illegitimate claim" could be one that is based on false information or that is not supported by evidence.
Important Note: The term "illegitimate" can be considered outdated and offensive, especially when referring to people. It is generally preferred to use more neutral and respectful language, such as "born out of wedlock" or "child of unmarried parents."
It's important to consider the context when trying to understand the meaning of "illegitimate" to avoid any misinterpretations.