verb (third-person singular present tense goes postal, present participle going postal, simple past went postal, past participle gone postal)
- (intransitive) (informal) To behave in a hysterical, angry or irrational manner.
Etymology: go (in the sense "become") + postal; from a rash of incidents, mostly gun violence, perpetrated by disgruntled U.S. Postal Service workers on co-workers in the United States in the 1980s (see quotations)
- German: ausrasten (informal)
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