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WordNet-Online
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Noun upheaval has 4 senses
- turbulence, upheaval, Sturm und Drang - a state of violent disturbance and disorder (as in politics or social conditions generally); "the industrial revolution was a period of great turbulence"
--1 is a kind of disorder
--1 has particulars:
- convulsion, turmoil, upheaval - a violent disturbance; "the convulsions of the stock market"
--2 is a kind of disturbance, disruption, commotion, stir, flutter, hurly burly, to-do, hoo-ha, hoo-hah, kerfuffle
- upheaval, uplift, upthrow, upthrust - (geology) a rise of land to a higher elevation (as in the process of mountain building)
--3 is a kind of rise, rising, ascent, ascension
- agitation, excitement, turmoil, upheaval, hullabaloo - disturbance usually in protest
--4 is a kind of disturbance
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