Origin: Latin suffix -al
Federal has 9 different meanings across 2 categories:
a member of the Union Army during the American Civil War
"The old man wore his faded blue uniform proudly, reminding everyone he was once a federal soldier who fought to preserve the nation."
any federal law-enforcement officer
"The angry crowd demanded that every federal agent leave the building immediately after refusing to intervene in the protest."
A law-enforcement official of the FBI; a federal agent.
"After losing his seat, he realized that being a federal meant representing a regional coalition rather than the national government directly."
A member of a Federal Party
In plain English: A federal system is a government where power is shared between a central national authority and smaller local regions.
"The federal represents the national government in many legal systems."
Usage: Do not use "federal" as a standalone noun to refer to a person; instead, use it only as an adjective modifying a noun like "government" or "system." When referring to a member of a political group, specify the full name such as "a Federal Party member."
national; especially in reference to the government of the United States as distinct from that of its member units
"the Federal Bureau of Investigation"
"federal courts"
"the federal highway program"
"federal property"
of or relating to the central government of a federation
"a federal district is one set aside as the seat of the national government"
characterized by or constituting a form of government in which power is divided between one central and several regional authorities
"a federal system like that of the United States"
"federal governments often evolved out of confederations"
Pertaining to a league or treaty; derived from an agreement or covenant between parties, especially between nations.
"The federal alliance was forged through a solemn pact among the neighboring city-states to ensure mutual defense against invaders."
In plain English: Federal means something that is run by a national government made up of different states working together.
"The federal government announced new rules for all states to follow."
Usage: Use federal only when describing systems where power is divided between a central government and regional states, not for general agreements between nations. This term specifically refers to a union of sovereign entities rather than a simple league or treaty.
The word federal comes from the French fédéral, which was borrowed from the Latin root meaning "covenant" or "alliance." It entered English to describe systems based on such formal agreements between groups.