LUKEWARM

[adjective] [not gradable] - (esp. of a liquid) only slightly warm; tepidThe baby's food needs to be heated until it's just lukewarm.How can you bear to drink this lukewarm coffee? (figurative) I asked Julia if she wanted to meet us for a drink, but she seemed rather lukewarm (= not enthusiastic) about the idea.(figurative) Her proposals got a lukewarm response/reaction/reception.