/ ˈtepɪd; NAmE / adjective
1.
slightly warm, sometimes in a way that is not pleasant
SYN lukewarm :
tepid tea
a tepid bath
➡ note at cold
2.
not enthusiastic
SYN lukewarm :
The play was greeted with tepid applause.
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WORD ORIGIN
late Middle English : from Latin tepidus , from tepere be warm.