Warm up a bit

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Tepefy \Tep"e*fy\, v. t. & i. [imp. & p. p. Tepefied ; p. pr. & vb. n. Tepefying .] [L. tepere to be tepid + -fy; cf. L. tepefacere. See Tepid .] To make or become tepid, or moderately warm. --Goldsmith.

Wiktionary Word definitions in Wiktionary
alt. 1 (context transitive English) To cause to become tepid 2 (context intransitive English) To become tepid vb. 1 (context transitive English) To cause to become tepid 2 (context intransitive English) To become tepid