The antonym for the phrase "more crammed" is "more spacious." When we say a room or a space is "crammed," it means that it's full to capacity, with little to no free space. On the other hand, "more spacious" refers to a room or area that's large and has enough room to move around, making it comfortable and less crowded. A more spacious area can feel relaxing and calming, providing an opportunity for peace and quiet, allowing people to move freely and giving them a sense of openness. In contrast, a more crammed space can be suffocating and cause claustrophobia in severe cases.