expulsion
n.the act of forcing someone to leave a place or an organization forever. This usually happens because the person did something very wrong, like breaking a school rule or a law.
n.the formal act of forcing someone to leave an institution, such as a school, or a country. Refers to a permanent removal rather than a temporary suspension.
“The student faced expulsion for cheating on the final exam.”
“The committee voted for his expulsion from the club after he repeatedly violated the code of conduct.”
“The sudden expulsion of foreign diplomats led to a significant breakdown in communication between the two nations, as neither side was willing to negotiate further.”
Uncountable when referring to the general process; countable when referring to a specific instance or event.
Expulsion is permanent; for a temporary removal, the correct term is 'suspension'.
“The government aims to transfer 500 girls to mainland Spain, but the PP has demanded the expulsion of all the remaining migrants.”
“The government recently has ordered the expulsion of people near the landfill and safety measures around the site because of a fear of collapses.”
From Middle English expulsioun, from Old French expulsion, from Latin expulsio, expulsionem.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.