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
Word Family

Test prep from the experts

Boost your test score with programs developed by Vocabulary.com’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week