objectivism is ayn rand pihilopshy, read "anthemn" and find out more.

Objectivism is a philosophy that values reason, individualism, and self-interest. In practice, someone who adheres to objectivism might make decisions based on logic and rationality, prioritize their own well-being, and emphasize personal autonomy and freedom.

this is what i found..

Ethical objectivism is in opposition to moral realism, which claims that moral propositions refer to objective facts - independent of human opion -- (deals with morals)

An antonym for altruism would be selfishness, egotism, or exploitive.

A less negative antonym would be: "objectivism" as held by Ayn Rand and expounded in her book, "The Fountainhead".

Philosophically speaking, the opposite of altruism is objectivism.

Leonard Peikoff is best known for his work in Objectivist philosophy, particularly for his book "Objectivism: The Philosophy of Ayn Rand" where he presents and explains Ayn Rand's philosophical ideas. He has also written books on topics such as education, politics, and epistemology.