Definition of "neck-deep" []

• Deeply involved (adjective)

WordNet. Princeton University. 2010.

• "Addressing imprisoned Qaeda and Taliban members, Mr. Zawahri said: "In order to release you, Allah the great and almighty guided us to capture the American Jew Warren Weinstein," whom he called "neck-deep in American aid to Pakistan since the 1970s," according to a translation by the Site Intelligence Group, which monitors jihadist messages."
• "They waded through more than 100 yards of frigid, neck-deep water, getting raked by sweeping machine gun fire from above."
• "Hamid Karzai and his family are neck-deep in any number of corruption scandals, the most glaring of which involves the largest private bank in Afghanistan and a sweeping control fraud scheme that has already resulted in unrest across the country."