Apathetic \Ap`a*thet"ic\, Apathetical \Ap`a*thet"ic*al\a. [See {Apathy}.] Void of feeling; not susceptible of deep emotion; passionless. a woman who became active rather than apathetic as she grew older [1913 Webster] 2. showing a lack of interest or concern; indifferent. an apathetic audience Syn: indifferent [WordNet 1.5]