The word "disdainfulnesses" is a rather complex word to find synonyms for. However, there are several words that can be used to replace it. The first one is "contemptuousness," which refers to the act of showing intense disdain or scorn towards something or someone. Another synonym for "disdainfulnesses" is "haughtiness," meaning the act of behaving in a proud and self-important manner, showing great disdain towards others. "Arrogance" is yet another term that can be used, which refers to displaying an exaggerated sense of self-importance, often accompanied by disdainful behavior towards others. These words are often used interchangeably with "disdainfulnesses" to express negative feelings or attitudes towards someone or something else.