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to the hilt

to the hilt idiom

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.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.