M3O1U1N1T1A1I1N1E1E1R1I1N1G2S1
18 points
MOUNTAINEERINGS is validvalid
MOUNTAINEERING, the sport of climbing mountains [n]
MOUNTAINEERING, the sport or technique of scaling mountains [n]
MOUNTAINEERING, the sport of climbing mountains [n]
MOUNTAINEERING, the sport or technique of scaling mountains [n]