tep·id
/ˈtepəd/
adjective
adjective: tepid
1. (especially of a liquid) only slightly warm; lukewarm.
"she soaked a flannel in the tepid water"
Similar: lukewarm, warmish, slightly warm, at room temperature, chambré
Opposite: hot cold
2. showing little enthusiasm.
"the applause was tepid"
Similar: unenthusiastic, apathetic, halfhearted, indifferent, cool