lukewarm

Etymology

From Middle English leukwarm, lukewarm (“lukewarm, tepid”), equivalent to luke (“lukewarm”) + warm. Compare Saterland Frisian luukwoarm (“lukewarm”), German Low German luukwarm (“lukewarm”), German lauwarm (“lukewarm”). 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 lau (“lukewarm”), Faroese lýggjur (“warm”), Swedish ljum (“lukewarm”), ljummen (“lukewarm”) and ly (“warm”), Danish lummer (“muggy”), Danish and Norwegian lunken (“tepid”), dialectal Swedish ljummen (“lukewarm”).

adj

1. (temperature) Between warm and cool.
   Wash it in lukewarm water.
   My curry is lukewarm.
2. Unenthusiastic (about a proposal or an idea).
   The suggestion met with only a lukewarm response.