federation

federation — noun

1. a political system or organization in which several states, groups, or regions h

1.nounB2
Definition

a political system or organization in which several states, groups, or regions handle their own local matters while joining together under a central authority for shared decisions, defense, or policy

Example

The European Union is a federation where member countries keep their own laws but follow common trade rules.

count noun: a named federation with member states

Each state in the federation can set its own education policy while the central government manages foreign relations.

contrast between state-level and central authority

Common collocations
  • become a federation
  • within a federation
  • member state of the federation
  • form a federation
  • central government of the federation
Synonyms
  • union

    broader term; a union can describe any joined-together group, while a federation specifically implies a structured division of power between local and central authorities

  • commonwealth

    often used for a political community founded for the common good; 'commonwealth' can be a type of federation but sometimes implies a looser association of self-governing states

  • federal state

    more technical term for a country organized as a federation, commonly used in political science

Antonyms
  • unitary state

    a country where the central government holds all power and local bodies only have authority given to them by the center, unlike a federation where power is constitutionally shared

  • independent state

    a sovereign state not joined to others under a shared central government

Usage Note

Distinguish from 'confederation': a federation has a stronger central government that can make laws binding on all member states, whereas a confederation is a looser union where the central body has limited power and members can usually withdraw more easily.

Common Mistakes

Switzerland is a confederation of 26 cantons.' (when referring to the modern state)
Switzerland is a federation of 26 cantons.
the country's official name still says 'confederation' for historical reasons, but its current political structure is a federation with a strong central government.
The trade union is a federation of workers.
The trade union is a federation of local branches.
'federation' describes groups or organizations joining together, not individual people.

2. the process by which separate states, regions, or groups come together to create

2.nounB2
Definition

the process by which separate states, regions, or groups come together to create a federal system, keeping some of their internal independence while accepting a shared central authority

Example

The federation of the two former republics took place after a peaceful vote in both countries.

federation of [two entities] — the process sense

Historians call this period the federation of the colonies, when local governments gave up some of their powers.

passive: referred to as the federation of...

Common collocations
  • federation of states
  • federation of regions
  • after federation
  • before federation
  • the process of federation
Synonyms
  • unification

    broader term for making separate parts into one whole; does not specifically imply a federal structure with divided powers

  • integration

    focuses on the gradual merging of systems or institutions rather than the formal political act of creating a federation

Antonyms
  • secession

    the act of withdrawing from a federation or union

Grammar Patterns

federation of [states / groups]

Usage Note

This sense is uncountable or singular and usually appears with 'of' to specify which entities are joining together. Common in historical and political science writing to describe the moment or period when a federal system was created.

Word family

  • federal
    adjectiveB2
  • federate
    verbC1
  • federative
    adjectiveC1
  • federalism
    nounC1
  • federalist
    nounC1
  • confederation
    nounB2
  • confederate
    nounC1

Synonym discussion

Sense: noun/1

These four words all describe groups that come together, but they differ in how tight and permanent the bond is. A federation is the strongest and most structured: it is a formal political entity with a central government and a constitution that divides power between the center and the members. A union is the broadest term — it can mean anything from a marriage to a trade union to a political merger, without specifying the power structure. An alliance is typically a temporary agreement between independent parties for a shared goal (e.g., military alliance), and each member can leave more freely. A confederation is closer to a federation but looser: the central body has limited authority and members retain more independence. A coalition is the most temporary — a short-term joining of forces for a specific purpose, such as a coalition government formed after an election. For example: the United States is a federation; NATO is an alliance; the early United States under the Articles of Confederation was a confederation; after the election, three parties formed a coalition government.

union ↗alliance ↗confederationcoalition ↗

Common collocations

Nouns

Adverbs

Phrases

  • form a federation
  • join a federation
  • dissolve a federation
  • belong to a federation
  • create a federation

Prepositions

Etymology

LatinFrenchEnglish

The word 'federation' entered English in the 18th century from French 'fédération', which came from Late Latin 'foederatio', meaning 'a binding together by treaty'. The root is Latin 'foedus' (league, treaty, covenant), which is also the source of 'federal' and 'confederate'. The idea of a permanent union formed by written agreement has been central to the word since its earliest use in political contexts.