English Reference
adjective · noun

customary

adj. · n.
US /ˈkəstəˌmɛɹi/ UK /kˈʌstəməɹi/ cus·tom·ary UK spelling customaries

  1. 01 B2 Upper Intermediate

    adj.describes something that people usually do in a particular society or situation.

    adj.conforming to or established by long-standing custom or social convention.

    Simple

    It is customary to tip the waiter about fifteen percent in this country.

    In context

    In many Mediterranean cultures, it remains customary to close shops during the hottest hours of the afternoon for a communal rest period.

    Usage

    Often used in the pattern 'it is customary to [verb]' or 'it is customary for [someone] to'.

  2. 02 C1 Advanced FormalTechnical Law

    adj.describes a rule or right that exists because it has been followed for a very long time.

    adj.pertaining to or held by custom, especially in a legal context where long-term practice creates a binding obligation.

    Simple

    The villagers argued they had a customary right to use the path through the woods.

    In context

    The court had to determine whether the local fishing practices constituted a customary right that predated modern maritime legislation.

    Teacher's tip

    In legal contexts, this is often contrasted with 'statutory' (written law).

  3. 03 C2 Proficiency ArchaicTechnical Law

    n.an old book that lists the laws and traditions of a specific place.

    n.a written collection or record of the customs and laws of a manor, guild, or city.

    Simple

    The historian studied the medieval customary to understand how the town was governed.

    In context

    The fourteenth-century customary provides invaluable insights into the agricultural obligations and social hierarchies of the feudal estate.

    Teacher's tip

    This noun sense is extremely rare and mostly found in historical or legal research.

    custumalrecord

The clan elders said they had the customary authority to choose a suitable prince to become "the Omukama" - the local title for the king of Tooro.

BBC News· 10 Sept 2026

From Middle English custumary, from Medieval Latin custumarius. By surface analysis, custom + -ary.

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

This entry
Origin la-med custumarius
Level B2 · Upper Intermediate
Frequency Frequent
Updated