Definition of arch- in English:

arch-

Syllabification: arch-

combining form

  • 1Chief; principal: archbishop
    Synonyms
    chief, principal, foremost, leading, main, major, prime, premier, greatest
    informal number-one, numero uno
  • 1.1Preeminent of its kind: archenemy
  • 1.2(In unfavorable senses) out-and-out: arch-scoundrel

Origin

via Latin from Greek arkhi-, from arkhos 'chief'.

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Word of the day mage
Pronunciation: māj
noun
a magician or learned person