1) Blasé 2) Casual 3) Impassive 4) Incurious 5) Indifferent 6) Lazy 7) Lukewarm 8) Musty 9) Spiritless 10) Torpid 11) Unawed 12) Uncaring 13) Undisturbed 14) Unenthusiastic 15) Uninterested 1) Careless 2) Casual 3) Easy-going 4) Half-hearted 5) Hardly concerned 6) Indifferent 7) Inert 8) Lacking in enthusiasm 9) Laid-back 10) Laissez-faire 11) Lazy 12) Marked by a lack of interest 13) Not giving a rap 14) Not interested in anything 15) Not interested or concerned 16) Not keen 17) Placid 
• (a.) Alt. of Apathetical
Exhibiting apathy; indifferent. ... (05 Mar 2000) ... 
Type: Term Pronunciation: ap′ă-thet′ik Definitions: 1. Exhibiting apathy; indifferent.
[adj] - showing little or no emotion or animation 2. [adj] - marked by a lack of interest
apathetic 1. Relating to a lack of emotion. 2. Descriptive of a lack of interest; a listless condition; unconcern; indifference.
indifferent adjective marked by a lack of interest; `an apathetic audience`; `the universe is neither hostile nor friendly; it is simply indifferent`
having or showing little or no emotion: apathetic behavior. · not interested or concerned; indifferent or unresponsive: an apathetic audience.
[SAT terms] showing little or no emotion or animation