apathetic
1. [ adjective ] showing little or no emotion or animation
Examples:

"a woman who became active rather than apathetic as she grew older"

Related terms: spiritless
2. [ adjective ] marked by a lack of interest
Synonyms: indifferent
Examples:

"an apathetic audience" "the universe is neither hostile nor friendly it is simply indifferent"

Related terms: uninterested
Similar spelling:   apatite
  appetite
  appetitive