Tepid means lukewarm or half-hearted. If the applause for your mime-on-a-unicycle performance was more tepid than enthusiastic, it might be time to find a new hobby.

Around 1400, the word tepid evolved from the Latin tepidus, an adjective meaning “lukewarm,” which before that came about from the Latin tepere, a verb meaning “to be warm.” Tepid people or things are lukewarm or lacking in enthusiasm or emotion. Bathwater that’s been sitting in the tub for two hours is probably tepid. So was the hug you gave your least favorite ex when you ran into him at the movie theater.

Definitions of tepid
  1. adjective
    moderately warm
    tepid bath water”
    synonyms: lukewarm
    having or producing a comfortable and agreeable degree of heat or imparting or maintaining heat
  2. adjective
    feeling or showing little interest or enthusiasm
    synonyms: half-hearted, halfhearted, lukewarm
    not enthusiastic; lacking excitement or ardor
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