Having many cliffs, characterized by steep rocky faces, or resembling a cliff in appearance or steepness.
From English 'cliff' + '-y' (Old English -ig, a suffix meaning 'full of' or 'characterized by'). This productive suffix creates adjectives from nouns: cloudy, rocky, shifty.
The '-y' suffix is one of English's most productive word-building tools, and 'cliffy' shows how speakers intuitively add it to describe landscapes—you won't find it in all dictionaries, but any English speaker would instantly understand it.
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