lukewarm

adj.

[1]	tepid , tepid , room temperature , warm
[2]	cool , halfhearted , half-hearted , indifferent , half-hearted , tepid , chill , chilly , phlegmatic , unresponsive , unenthusiastic , nonchalant , lackadaisical , apathetic , insouciant , Laodicean , unmoved , (US) half-baked , (Colloq) laid-back