Yes, it is a verb. It means to shun, set apart, or to exile, banish.
Ostracize is a verb
ostracize
if the word is ostracize then means: to keep people in a group. Not to exclude people.
Do not ostracize Molly from your circle of friends just because she has braces and ugly pigtails.
The Klu Klux Klan would ostracize any member who defended an African American. The faculty was known to ostracize any professor who opposed the popular dean.
A mom could tell her son, "Dont ostracize your brother!" as in dont leave him out and make sure he is included
Shakespeare did not use the word ostracize so you must be thinking of someone else's Romeo and Juliet. Ostracize is a word meaning to banish, deriving from the ancient Greek custom in Athens where the citizens could vote (by writing on bits of broken pottery called ostrakoi, hence "ostracize") to banish one of the citizens from the city as a punishment. "Banish" is of course a word that Shakespeare actually did use in his play Romeo and Juliet.
Great Britten and New York
Meaning 'to separate' or 'to exclude,' the verb 'ostracize' has several antonyms in English. One would be 'to join'; another would be 'to include.'
(Ostracize means to avoid or shun, or exclude from a group.)"He should have expected that the town would ostracize him after he insulted the mayor.""In medieval Iceland, local councils could ostracize individuals for crimes or antisocial acts."
It means ostracize. JUSTIN BIEBER ROX! I hoped this helped.
Quite the opposite.os·tra·cize/ˈästrəˌsīz/Verb1. Exclude (someone) from a society or group.