Meaning

noun the property of being big and strong

noun the quality of being topologically uneven

noun the quality of being difficult to do

originEtymology tree English rugged 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 ruggedness From rugged + -ness.

Etymology from Wiktionary, CC BY-SA 3.0