- The definition of lukewarm is someone or something not very warm or lacking in enthusiasm.
- An example of lukewarm is coffee after it's been sitting out for thirty minutes.
- An example of lukewarm is someone who reluctantly hugs another person.
- barely or moderately warm: said of liquids
- not very warm or enthusiastic: lukewarm praise
Origin of lukewarmMiddle English luke warme ; from luke, tepid (akin to Low German luk, Dutch leuk, tepid ; from Indo-European an unverified form kleu- ; from base an unverified form kel-, warm from source Old English hleowe, tepid, Classical Latin calere, to be warm) + warm, warm
- Mildly warm; tepid.
- Lacking conviction or enthusiasm; indifferent: gave only lukewarm support to the incumbent candidate.
Origin of lukewarmMiddle English leukwarm : leuk, luke (possibly alteration of leu, from Old English hlēow; see kel&schwa;-1 in Indo-European roots) + warm, warm; see warm.
From Middle English lukewarme (“lukewarm, tepid”), equivalent to luke (“lukewarm”) + warm. First element believed to be an alteration of Middle English lew (“tepid”) (> English dialectal lew), from Old English hlēow (“warm, sunny”), from Proto-Germanic *hliwjaz, *hlēwaz, *hlūmaz, *hleumaz (“warm”), from Proto-Indo-European *ḱal(w)e-, *ḱel(w)e-, *k(')lēw- (“warm, hot”). Cognate with Dutch lauw (“tepid”), German lauwarm (“lukewarm”), Faroese lýggjur (“warm”), Swedish ljum (“lukewarm”), ljummen (“lukewarm”) and ly (“warm”), Danish lummer (“muggy”), Danish and Norwegian lunken (“tepid”), Swedish dialectal ljummen (“lukewarm”).