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English definition of “plunge in/plunge into sth”

plunge in/plunge into sth

verb uk phrasal verb with plunge   /plʌndʒ/ us  
C2 to suddenly start doing something actively or enthusiastically: Two months before his exams, he suddenly plunged into his studies. He took a deep breath and plunged into his speech.Taking part and getting involvedGetting involved for one's own benefit or against others' willStarting and beginningStarting again
(Definition of plunge in/plunge into sth from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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