verb
ostracize
AHS-truh-size/ˈɑːstrəsaɪz/
To exclude someone from a group or community.
The group ostracizes the person by deliberately closing the gathering's door to exclude that person.

Etymology
The potsherd connection comes from Athenians scratching names on pottery fragments to vote for banishment. Exclusion by public vote became an image for excluding someone from society or a group.
In context
the source of the family's shame is Gregor's transformation and it is this shame coupled with the fear that I mentioned earlier that causes them to ignore ostracize and abuse Gregor
More examples
- He feels ostracized when his coworkers leave him out of every gathering.
- The community ostracized the family after the scandal.
- Ostracizing someone over a disagreement can destroy a friendship.
Forms
ostracize · ostracizes · ostracized · ostracizing
ostracism noun — The exclusion of someone from a social group.