The word "roominesses" means the quality or state of being spacious or having plenty of room. Some synonyms for this word include spaciousness, expansiveness, airiness, openness, and largeness. These words convey the idea of having ample space and not feeling cramped or confined. Other synonyms for "roominesses" include commodiousness, capaciousness, and ample space, which also suggest a sense of ease and comfort in a particular area. Overall, these synonyms highlight the importance of having sufficient space and a feeling of openness in one's surroundings, whether it's a physical space like a room or a mental space like a perspective or mindset.