adjective
nice, quiet, delicate
Synonyms: attenuate, attenuated, deep, discriminating, ethereal, exquisite, faint, fine, finespun, hairline, hairsplitting, illusive, implied, inconspicuous, indirect, indistinct, inferred, ingenious, insinuated, mental, penetrating, profound, refined, slight, sophisticated, suggestive, tenuous, thin, understated
Antonyms: hard, harsh, noisy, unsubtle
adjective
clever, cunning
Synonyms: analytic, analytical, artful, astute, complex, crafty, deep, designing, detailed, devious, dexterous, exacting, foxy, guileful, insidious, intriguing, keen, penetrating, perceptive, precise, ratiocinative, scheming, shrewd, skillful, sly, wily
Antonyms: forthright, honest, open