11 letters · 20 points in Scrabble
adverb in an unselfish manner
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- English selfish Middle English -ly English -ly English unselfishly From un- + selfish + -ly.
Etymology from Wiktionary, CC BY-SA 3.0