Vitalnesses, also known as vitalities or essentialities, refer to the quality or state of being necessary for life or existence. Synonyms for this word include importance, significance, cruciality, indispensability, and necessity. These terms emphasize the critical value and relevance of something to human life or the functioning of a system. Other synonyms for vitalnesses include essentiality, coreness, centrality, and fundamentalness. These words convey the idea of something being at the heart of a matter or the foundation of a concept. In short, vitalnesses are the characteristics that make something crucial, necessary, and important for survival or success.