in deep

Idioms  

1. Seriously involved; far advanced. For example, He was in deep with the other merchants and couldn't strike out on his own , or She used her credit cards for everything, and before long she was in deep .

2. in deep water . Also, in over one's head . In trouble, with more difficulties than one can manage, as in The business was in deep water after the president resigned , or I'm afraid Bill got in over his head . These metaphoric expressions transfer the difficulties of being submerged to other problems. The first appears in Miles Coverdale's 1535 translation of the Book of Psalms (68:13): “I am come into deep waters.” The second, which also can signify being involved with more than one can understand, dates from the 1600s. Also see over one's head .

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Example Sentences

Dressed in deep yellow-gold robes, she was greeted by local school children who asked why she had been sent.

From Barron's

Nearly 60 years later, the country is once again mired in deep division and uncertainty, and the crew of Artemis 2 will soon have their chance to inspire.

From Barron's

Tottenham are in deep trouble.

From BBC

As the music swelled, the stage was washed in deep red.

From BBC

Masoud Pezeshkian said the "cowardly assassination" had left Iran "in deep mourning", after Israel said on Wednesday it had killed Khatib in an air strike.

From BBC