English Reference
adjective

postal

adj.
US /ˈpoʊstəɫ/ UK /pˈəʊstəl/ postal

  1. 01 B1 Intermediate

    relating to the system of sending and delivering letters and packages.

    relating to the collection, sorting, and delivery of mail by a national or commercial service.

    Simple

    The postal service is usually slower during the busy holiday season.

    In context

    The government introduced new postal regulations to standardise the dimensions of international parcels and reduce sorting errors.

    Usage

    Usually placed before a noun.

  2. 02 C1 Advanced American EnglishSlangInformal

    becoming suddenly and violently angry, especially at work.

    becoming uncontrollably or violently angry; often used in the phrase 'go postal'.

    Simple

    He almost went postal when he found out his car had been towed.

    In context

    The manager was worried that the constant overtime and lack of support would cause one of the stressed employees to go postal.

    Usage

    Almost exclusively used with the verb 'go'.

    Teacher's tip

    This term originated from high-profile incidents of workplace violence at US post offices in the 1980s; it is very informal and can be sensitive.

The postal service has faced years of criticism from politicians and the public over the slowness of its letter delivery.

BBC News· 21 Aug 2026

Democratic lawmakers have likewise argued that the Postal Service is seeking to reconfigure election rules with the midterm elections just months away.

Al Jazeera· 22 Aug 2026

From post + -al, modelled on French postal.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin French postal
Level C1 · Advanced
Frequency Frequent
Updated