a. [ L. tepidus, fr. tepere to be warm; akin to Skr. tap to be warm, tapas heat. ] Moderately warm; lukewarm; as, a tepid bath; tepid rays; tepid vapors. -- Tep"id*ness, n. [1913 Webster]
n. [ Cf. F. tépidité. ] The quality or state of being tepid; moderate warmth; lukewarmness; tepidness. Jer. Taylor. [ 1913 Webster ]