lukewarmness

Etymology
From.

Noun

 * 1) The property of being lukewarm; ambivalence, weakness.
 * 2) * 1665,, New Experiments and Observations Touching Cold, Discourse II, in The Works of the Honourable Robert Boyle, London: A. Millar, 1744, Volume II, p. 246,
 * And indeed, there is scarce any quality, for whose differences we have fewer distinct names, having scarce any for the many degrees of coldness, that may be conceived to be intermediate, betwixt lukewarmness and the freezing degree of cold