lukewarm

英['luːkwɔːm;luːk'wɔːm;lj-] 美[,lʊk'wɔm]

1. moderately warm;

"he hates lukewarm coffee"

"tepid bath water"

2. feeling or showing little interest or enthusiasm;

"a halfhearted effort"

"gave only lukewarm support to the candidate"