D defs.my
Entry 1 sense Webster, 1913

Arch-

/(ärch-, except in archangel and one or two other words)/ · IPA /ɑː(ɹ)t͡ʃ/
01 A prefix signifying chief, as in archbuilder, archfiend.
  1. 1.
    A prefix signifying chief, as in archbuilder, archfiend.