arch-

(Greek: beginning; the first, the leader, the ruler; being first has two different, but often related, meanings: one meaning indicated first in time; another indicated first in importance)

In many cultures, being the first-born holds many privileges, both legal and traditional

The family of words with the common root of arch seem to have words which are quite different from each other; however, they all have something in common: they are all related to the idea of "first".

Being first has at least two different, but often related, meanings: one meaning indicates first in time while another indicates first in importance.

—Compiled from information located in
Words Come in Families by Edward Horowitz, Ph.D.;
Hart Publishing Company, Inc.; New York; 1977; pages 21-23.
anarchy (s) (noun), anarchyies (pl)
Absence of government and law; without a leader: After the revolution, there was complete anarchy in the land.
archaic (adjective), more archaic, most archaic
Referring to something that is from ancient times; old-fashioned: The word "thou" is an archaic form of "you".
archangel (s) (noun), archangels (pl)
A powerful , chief, or main angel: Gabriel was named as one of the seven archangels.

archbishop (s) (noun), archbishops (pl)
The chief bishop of a diocese: Thomas Becket, the archbishop of Canterbury, was murdered when he opposed King Henry II.

archdiocese (s) (noun), archdioceses (pl)
The district presided over by an archbishop: The archdiocese of New York is proud of Mother Seton, a New Yorker who was declared to be the first American saint.

archduke (s) (noun), archdukes (pl)
A chief duke; the ruler of an archduchy: The assassination of Archduke Francis Ferdinand of Austria on June 28, 1914 precipitated World War I.

archenemy (s) (noun), archenemies (pl)
Chief, or main, enemy: A very serious disease is the archenemy of mankind.

archeologist (s) (noun), archeologists (pl)
A scientist who excavates ancient cities: John's mother was an archeologist who studied human history and prehistoriy by the way of excavations of sites and the scrutiny and examination of artifacts and other physical objects.
archeology (s) (noun), archeologies (pl)
The science dealing with ancient civilizations: Archeology is the study of the human past through the recovery and analysis of material remains.

As people search for their origins, archeology provides insights into our shared heritage.

archetype (s) (noun), archetypes (pl)
Chief or primary mode; prime examplel: Satan is the archetype of evil.

archipelago (s) (noun), archipelagos; archipelagoes (pl)
1. A group of islands, or an area of sea containing a cluster of islands: The islands of an archipelago are usually volcanic in origin, and they sometimes represent the tops of peaks in areas around continental margins flooded by the sea.
2. Etymology: from Italian arcipelago, "the Aegean Sea" (13th century), from Greek arkhipelagos, from arkhi-, "chief" + pelagos, "sea".

The Aegean Sea being full of island chains, the meaning was extended in Italian to "any sea studded with islands".

The Aegean archipelago lies between Greece and Turkey.

architect (s) (noun), architects (pl)
The chief builder or designer: The Guggenheim Museum in New York City was designed by the famous American architect Frank Lloyd Wright.

hierarchy (s) (noun), hierarchies (pl)
A group arranged in order of rank or grade: The President is at the head of the U.S. governmental hierarchy.
matriarch (s) (noun), matriarchs (pl)
The mother or woman who rules a family or tribe: The seventy-year-old grandmother was the matriarch of the family.
monarch (s) (noun), monarchs (pl)
The sole ruler of a state or country: Louis XVI, the monarch of France, was beheaded during the French Revolution.

Extend your knowledge by clicking on this arch- link for more "chief, principal leader" words.