Akademik

subtle
I (insidious) adjective canny, contriving, crafty, cunning, deceitful, deceptive, designing, feline, guileful, illusive, implied, indistinct, inferred, insinuated, intriguing, serpentine, shifty, shrewd, sly, sophistical, stealthy, tricky, underhand, vulpine, wily II (refined) adjective accomplished, airy, apt, artful, artistic, astute, clever, deft, delicate, diplomatic, discerning, discreet, discriminating, exact, expert, keen, light, masterly, meticulous, perceptive, politic, precise, sagacious, sharp, skillful, slender, sophisticated, strategic, subtile, superfine, tactful III index artful, discreet, furtive, impalpable, inconspicuous, insidious, obscure (faint), politic, recondite, sly, surreptitious

Burton's Legal Thesaurus. . 2006