What does it mean to declare someone not guilty of criminal charges?

To declare someone not guilty of criminal charges means to exculpate that individual. The term "exculpate" specifically refers to the act of clearing someone from blame or fault, especially in the context of legal accusations. When a person is found not guilty, it indicates that they have been freed from the charges that were brought against them, confirming their innocence in the eyes of the law.

The other terms, while they have their respective meanings, do not relate to the legal context of a not guilty verdict. "Fawn" means to show excessive affection or attentiveness, typically in a flattering manner. "Extemporaneous" refers to something done without preparation or planning, and is often used to describe speaking or performances. "Lucid" means clear or easy to understand, typically relating to communication or expression. None of these options align with the legal definition of being declared not guilty.