The antonyms for the term "more unventilated" include well-ventilated, airy, breezy, ventilated, and spacious. These words are used to describe places that have good airflow and are not stuffy or cramped. A well-ventilated room or building allows fresh air to circulate freely, which can help keep people healthy and comfortable. In contrast, an unventilated room may feel hot, oppressive, and suffocating. It is important to maintain good ventilation in enclosed spaces, especially during the hot summer months. By using air conditioning, fans, or simply opening windows, you can make your home, office, or other space more comfortable and healthy for all occupants.