Slabbiness

"1678, John Bunyan, The Pilgrim’s Progress, London: Nath. Ponder, Facsimile reproduction, London: Elliot Stock, 1875, Part 2, p. 183, The Way also was here very wearysom thorow Dirt and Slabbiness."

"1895, W. P. Haskett Smith, “Wales” in Climbing in the British Isles, London: Longmans, Green, and Co., “The Arans,” Looking up from the lake the crag, which is a high dependence of Aran Benllyn, shows on the right an almost unrelieved slabbiness at an easy angle, which gives good practice in small footholds."