plunge
noun
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a brief swim in waterdip
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a steep and rapid fall
verb
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begin with vigorlaunch
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devote (oneself) fully tosteepabsorbengrossimmerseengulfsoak up
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cause to be immersed“The professor plunged the students into the study of the Italian text.”immerse
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immerse briefly into a liquid so as to wet, coat, or saturatedunk
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thrust or throw intoimmerse
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dash violently or with great speed or impetuosity“I plunged at the clog eagerly.”
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drop steeply“the stock market plunged”dive
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fall abruptly“It plunged to the bottom of the well”dump