14 letters · 17 points in Scrabble
noun the activity of climbing a mountain
verb climb mountains for pleasure as a sport
originEtymology tree English mountain Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -ārius Old French -ier Middle French -ierder. English -eer English mountaineer English -ing English mountaineering From mountaineer + -ing.
Etymology from Wiktionary, CC BY-SA 3.0