noun
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the naturally elevated and inclined ground; unevenness.
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a going alternatively up and down; up and down.
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fluctuations in one's fortune, business, endeavour, etc.
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difference in levels.
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lack of equilibrium (as of a balance).
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ಏರುಪೇರುಕಟ್ಟು ērupērukaṭṭu to adjust the difference between the to pans of a balance, by adding the differential weight to one of them.