10 letters · 11 points in Scrabble
noun the state of being vigorous and robust
noun the property of something that is strongly built
noun resoluteness evidenced by strength of character
originEtymology tree English sturdy Proto-Germanic *-inōną Proto-Indo-European *-dyé- Proto-Germanic *-atjaną Proto-Indo-European *-tus Proto-Germanic *-þuz Proto-Germanic *-assuz Proto-Germanic *-inassuz Proto-West Germanic *-nassī Old English -nes Middle English -nesse English -ness English sturdiness From sturdy + -ness.
Etymology from Wiktionary, CC BY-SA 3.0