Assist me to overcome sensuality by mortification, avarice by almsdeeds, anger by meekness, and tepidity by zeal.
You bet I rejoice at the outlook—I long to escape from tepidity.
She took an interest in Laura partly perhaps to make up for the tepidity with which she regarded Selina.
The harder he worked, the more hotly he pursued knowledge, the more urgent was a man's need for intervals of tepidity.
c.1400, from Latin tepidus "lukewarm," from tepere "be warm," from PIE root *tep- "warm" (cf. Sanskrit tapati "makes warm, heats, burns," tapah "heat;" Avestan tafnush "fever;" Old Church Slavonic topiti "to warm," teplu "warm;" Old Irish tene "fire;" Welsh tes "heat").