English
hillwalking
From hill + walking.
Proto-Indo-European *kl̥Hnís ‘top, hill, rock’
Proto-Germanic *hulliz ‘hill’
Proto-West Germanic *hulli ‘hill’
Old English hyll ‘hill’
Middle English hil ‘hill’
English hill
Proto-Indo-European *welH- ‘to roll, undulate’
…
Proto-Germanic *walkaną ‘to turn, roll; to walk, wander’
Proto-Germanic *walkandz
Old English wealcende
Middle English walkynge
English walking
Today it means
noun The pastime of walking in hilly countryside.
Language periods are conventional ranges, not dates for this word.
Etymograph / hillwalking