Word Study
arch-
CIDE DICTIONARY
arch-, [L. arch-, Gr. 'arch- = 'archi-. See Arch-.].
A prefix signifying chief , as in archbuilder, archfiend. [1913 Webster]
OXFORD DICTIONARY
arch-, comb. form 1 chief, superior (archbishop; archdiocese; archduke).
2 pre-eminent of its kind (esp. in unfavourable senses) (arch-enemy).
2 pre-eminent of its kind (esp. in unfavourable senses) (arch-enemy).
Etymology
OE arce- or OF arche-, ult. f. Gk arkhos chief
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