From Longman Dictionary of Contemporary Englishplunge (somebody/something) into something phrasal verbto suddenly experience a difficult or unpleasant situation, or to make someone or something do this A strike would plunge the country into chaos. The house was suddenly plunged into darkness. After the war, the family plunged into debt. → plunge→ See Verb table
Examples from the Corpus
plunge into • The lights dim, then go off, plunging the hall into darkness.• Eddie was more desperate, and that made him weaker, he thought; and he plunged once more into despair.• And as he withdrew to plunge again into her willing vagina, she realised she didn't mind which orifice he filled.• This would hit struggling homebuyers and businessmen, plunging Britain deeper into recession.• The leap to full Highlight plunged me deep into the pouch-seat.• The plunges are all into the same deep inward sea; of that there can be no doubt.• He was just about to plunge back into the streets when he saw some one running towards him.• She plunged deeply into work to try and distract herself.plunged into darkness• Just as the teacher was getting into her stride, the whole school was plunged into darkness.• Labour has been feeling its way since Major's election, as if the corridor it was traversing was suddenly plunged into darkness.• Our society would be plunged into darkness.• Teal Green was coughing up a lungful of smoke when the Base was plunged into darkness.• The room was plunged into darkness and stayed like that for the rest of the day.• With his house plunged into darkness, Jessie's owner sought my help.From Longman Business Dictionaryplunge into phrasal verb [transitive]1plunge into something to begin to do something suddenly, without thinking about the possible resultsInvestors are plunging into the world of international bonds.2plunge (somebody/something) into something to start to experience a difficult or unpleasant situation, or to make someone or something start to experience itAfter the war, Europe plunged into recession.A disastrous Christmas period plunged the company into a cash crisis. → plunge→ See Verb table 