Meaning of -ARCHY in English
a combining form meaning "rule," "government," forming abstract nouns usually corresponding to personal nouns ending in -arch: monarchy; oligarchy.
[ ME -archie -archia arch ( os ) or -arch ( es ) -ARCH + -ia -Y 3 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012