abandon, anodyne, apathetic, apathy, bland, blasé, catatonic, disinclined, halfhearted, impassive, indifference, indifferent, insipid, insouciant, jaded, lackadaisical, lacklustre, lethargy, listlessness, monotonous, nondescript, oblivious, pabulum, pedestrian, phlegmatic, repressed, stoic, stolid, tepid, uncommitted, uncommunicative, unexciting, unforthcoming, unimpressed, uninspiring, vapid, withdrawn