The word "adult" refers to an individual who has reached the age of maturity, typically as defined by law. In many jurisdictions, someone is considered an adult at the age of 18 or 21, depending on the specific legal system. Being an adult generally implies that the person has certain rights and responsibilities, such as the ability to vote, enter into contracts, and make their own decisions independently.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: What Peter Pan refuses to become. Explanations are generated by AI and may be inaccurate.