"More uncrowded" can be described by various antonyms like crowded, congested, busy, dense, packed, and cramped. These adjectives denote a place or situation that's highly frequented or has a large number of people. The opposite of "more uncrowded" implies a peaceful, tranquil, and spacious environment, like remote, secluded, quiet, sparse, or isolated. These words convey a sense of calm and freedom from the hustle and bustle of crowds. A "more uncrowded" place offers a sense of serenity and solitude, whereas a crowded place can be overwhelming and stifling. Choose your words wisely to convey the exact impression you want to communicate.