The word "solipsistically" refers to the tendency to view everything as a reflection of oneself and to prioritize one's own feelings and experiences above all else. Synonyms for this word could include self-centeredly, egocentrically, narcissistically, and self-obsessedly. These terms all suggest a strong focus on the self, often to the detriment of others. Other possible synonyms might include selfishly, self-indulgently, and self-importantly. These words all paint a picture of someone who is more concerned with their own desires and needs than with those of others, and may act in ways that are harmful or insensitive to those around them.