Federalist (noun)

1. A person who supports or advocates for federalism, the idea of a federal system of government.
2. A member or supporter of the Federalist Party in the United States, a political party in the late 18th and early 19th centuries that supported a strong federal government and a strong central government.

Origin:

From latin foedus, meaning "treaty, covenant" and -al + -ist.

Examples:

1. Alexander Hamilton was a prominent federalist and co-wrote the Federalist Papers.
2. The Federalist Party was influential in the early years of the United States, but its influence declined over time.
3. The federalists believed that a strong federal government was necessary to ensure unity and stability in the country.
4. The debates between the federalists and the anti-federalists shaped the creation of the US Constitution.
5. Federalists supported a strong central government, a strong navy, and a national bank.