adjective, cliff·i·er, cliff·i·est.
Examples from the Web for cliffy
The headlands project boldly far into the sea; in front lie several islands, and behind dark forests and the cliffy Apennines.The Life of Lord Byron|John Galt
We stopped to dine on an interesting rocky island, securing our canoe to the cliffy shore.Canoeing in the wilderness|Henry David Thoreau
He stood a second on the cliffy north wall to look down on the quiet harbor.Poor Man's Rock|Bertrand W. Sinclair
The Finsteraarhorn sends down a number of cliffy buttresses, separated from each other by wide couloirs filled with ice and snow.The Glaciers of the Alps|John Tyndall
At half past five we were three miles from a cliffy head which had been taken for an island at the anchorage, and set at N 77 E.A Voyage to Terra Australis|Matthew Flinders