Словарь синонимов английского языка - arch

(adj) 1. chief, principal, prime, primary, pre-eminent, foremost, first, greatest, consummate, major: Moriarty was Holmes's arch-enemy. 2. clever, cenning, crafty, roguish, tricky, shrewd, artful, sly, designing: Brendan loves to play his arch pranks on unsuspecting friends. 3. waggish, saucy, mischievous, prankish: I could tell from the lad's arch expression that he had thrown the snowball.