1. the action of alienating
the action of causing to become unfriendly

e.g. his behavior alienated the other students

2. (law) the voluntary and absolute transfer of title and possession of real property from one person to another

e.g. the power of alienation is an essential ingredient of ownership

3. the feeling of being alienated from other people

Synonym: disaffectionestrangement

4. separation resulting from hostility

Synonym: estrangement