IPA: /ˌæn.tiˈhjuː.mə.nɪ.zəm/
KK: /æntiˈhjuːmənɪzəm/
A belief or philosophy that opposes the principles of humanism, which emphasizes the value and agency of human beings.
The rise of antihumanism has sparked debates about the role of humanity in the modern world.
Antihumanism is formed from "anti-" (meaning against) and "humanism" (from Latin "humanismus", meaning a system of thought that emphasizes human values and concerns). The word refers to a stance or philosophy that opposes or critiques the principles of humanism.
Think of 'against' ('anti-') human values and ideas — that's what antihumanism means.