Use 'precipitous' to describe landscapes or objects that dramatically rise or fall. In the painting, the precipitous rocks loomed over the churning sea.
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Emotional Effect
'Precipitous' conveys awe or fear due to extreme steepness or depth. Staring down the precipitous gorge sent a shiver down my spine.
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Not Just Mountains
While often used for natural features, 'precipitous' can also apply to man-made structures. The skyscraper featured a precipitous drop-off at its observation deck.