Synonym of knee-deep in the Big Muddy

(chiefly US, idiomatic) Stuck in a predicament; mired in a difficult situation, especially one resulting from poor judgment or bad leadership.

(politics, conspiracy research) A large group of people, typically members of government agencies and the military, believed to have long-lasting political influence that is difficult for an administration voted into power to counter.

(logic, uncountable) The act of representing one language, typically a logic or programming language, with another by modeling expressions in the former as data in the latter.

at heart, deep down

plural of title deed

Industrious; active. / Earnest; serious.

Synonym of diaphragmatic breathing

Alternative spelling of deep breathing.

(obsolete or dialectal) deaf