To banish, exile, or formally expel someone from a community or group.
From exostracism + '-ize' (verb forming suffix). A theoretical verb form that would accompany exostracism, though it remains extremely rare and appears primarily in etymological or linguistic discussions rather than actual usage.
This verb is so rare you might only encounter it in academic papers about English word formation—it's a ghost word that exists in theory but almost nobody actually uses it in real sentences!
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