Upheaval (Noun)
Meaning 1
(geology) a rise of land to a higher elevation (as in the process of mountain building).
Classification
Nouns denoting natural events.
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Meaning 2
Disturbance usually in protest.
Classification
Nouns denoting acts or actions.
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Meaning 3
A state of violent disturbance and disorder (as in politics or social conditions generally); "the industrial revolution was a period of great turbulence".
Classification
Nouns denoting natural processes.
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Meaning 4
A violent disturbance; "the convulsions of the stock market".
Classification
Nouns denoting natural processes.