high birth (noun) gentility: sophistication, cultivation
Sinonime: aloof, antipathetic, apathetic, aversive, callous, cold*, cold-blooded, cool*, cruel, disinterested, frigid, halfhearted, hard, harsh, heartless, icy*, indifferent, insensitive, lukewarm, mean, nasty, obdurate, repellent, repugnant, stony, tough*, uncaring, uncharitable, uncompassionate, unconcerned, uncongenial, unemotional, unfeeling, unkind, unmoved, unpleasant, unresponsive, unstirred, untouched
Antonime: coarseness, crudeness, roughness, rusticity