Definitions

1. verb

to exclude or ban (someone) from a group or community, often as a form of punishment or social penalty

“The student council decided to ostracize the classmate who cheated on the exam.”

2. verb

to avoid or refuse to associate with (someone), especially as a way of showing disapproval or distaste

“The celebrity tried to ostracize the paparazzi by not attending public events.”

3. noun

the act of ostracizing someone, or the state of being ostracized

“The ostracism of the whistleblower led to a public outcry.”