The antonyms for the word "more stuffed-up" include clear, unobstructed, airy, and open. These words describe a condition opposite to congestion, where the airways are free from blockages and allow smooth breathing. While feeling more stuffed-up may occur due to a cold, flu, or allergies, it can also result from pollution, smoke exposure, or dust inhalation. Therefore, it's essential to maintain good air quality, regularly clean surfaces and carpets, and avoid smoking to prevent congestion. In some cases, medical treatments can relieve stuffed-up symptoms, such as saline solution or decongestant sprays, steam inhalation, and prescription medications.