to the hilt
Also, up to the hilt. Completely, to the maximum degree, as in The house was mortgaged up to the hilt. This idiom alludes to the handle (hilt) of a sword, the only portion that remains out when the weapon is plunged all the way in. The figurative use of the term was first recorded in 1687.
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.