The term eudemonistical refers to someone who is overly concerned with personal happiness, to the point of being selfish or self-centered. Some synonyms for this word may include hedonistic, pleasure-seeking, self-indulgent, or self-gratifying. These terms all describe an individual who places their own happiness above everything else, often at the expense of those around them. Other synonyms for eudemonistical may include egoistic, narcissistic, or self-absorbed, which all describe someone who is excessively focused on themselves and their own needs. While everyone wants to be happy, it's important to remember that true happiness often comes from caring for others and working towards a greater good, rather than solely focusing on one's own desires.