10 letters · 22 points in Scrabble
adverb in an unenthusiastically lukewarm manner
originEtymology tree Middle English leuk Proto-Germanic *warmaz Proto-West Germanic *warm Old English wearm Middle English warm Middle English leukwarm English lukewarm Middle English -ly English -ly English lukewarmly From lukewarm + -ly.
Etymology from Wiktionary, CC BY-SA 3.0