I don't know - the word also exists in German as "lauwarm", but "laukalt" (lukecool), which does not share those problems, also does not exist (and AFAIK it's n

I don't know - the word also exists in German as "lauwarm", but "laukalt" (lukecool), which does not share those problems, also does not exist (and AFAIK it's not a loan word from English, but a "normal" compound word from "lau" and "warm" / both derive from Common Germanic[1]). [1] https://en.wiktionary.org/wiki/lukewarm https://en.wiktionary.org/wiki/lukewarm and https://en.wiktionary.org/wiki/lauwarm#German https://en.wiktionary.org/wiki/lauwarm#German - sorry, unable to find a better source on the spot