adjective. Without enthusiasm; unexcited.

adjective. not enthusiastic; lacking excitement or ardor

"Gergen said that HRC was "unenthusiastic" not on substance, but because she did not want the President to expend political capital on it, rather than on her healthcare program."

enthusiastic  

cold  halfhearted  lukewarm  tepid  

anaplastic  bombastic  desmoplastic  drastic  dynastic  

ambivalent  anti-buddhist  debt-free  deducible  depth-of-field  

apathetic  backward  balking  balky  blase