精致的利己主义者可以用英文表达为'Sophisticated Egoist'。

Sophisticated Egoists are individuals who prioritize their own self-interests while maintaining a high level of sophistication and refinement in their actions and behavior. They are not selfish in the traditional sense, but rather seek to maximize their own personal gain through strategic and calculated decisions.

These individuals are highly intelligent and possess a sharp wit and keen sense of awareness. They are able to navigate complex social situations with ease, often leveraging their charm and charisma to achieve their goals.

Sophisticated Egoists are not afraid to take risks, but they do so in a calculated and strategic manner. They are highly ambitious and driven, and will stop at nothing to achieve their desired outcomes.

Despite their focus on self-interest, Sophisticated Egoists are not necessarily immoral or unethical. They understand the importance of maintaining a positive reputation and will often go to great lengths to ensure that they are viewed favorably by others.

Overall, the term 'Sophisticated Egoist' describes an individual who is highly intelligent, ambitious, and strategic in their pursuit of personal gain. While they may prioritize their own interests, they do so in a way that is calculated, refined, and socially acceptable.