ap·a·thet·ic 
(ăp′ə-thĕtĭk) also ap·a·thet·i·cal (-ĭ-kəl)
(ăp′ə-thĕtĭk) also ap·a·thet·i·cal (-ĭ-kəl)adj.
1. Feeling or showing a lack of interest or concern; indifferent.
2. Feeling or showing little or no emotion; unresponsive.
[From APATHY, on the model of PATHETIC.]
ap′a·theti·cal·ly adv.