Synonyms

skeleton key

American

noun

a key with nearly the whole substance of the bit filed away so that it may open various locks.

skeleton key British

noun

Also called: passkey. a key with the serrated edge filed down so that it can open numerous locks

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of skeleton key

First recorded in 1800–10

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Those looking for a felt skeleton key to unlock his various idiosyncrasies aren’t likely to find one.

From New York Times • Mar. 11, 2023

Their relationship, according to “The Last of Us” co-creator and executive producer Craig Mazin, is “ultimately … the skeleton key to unlock all of this show.”

From Los Angeles Times • Feb. 1, 2023

The two hand-delivered the resolution to the city government in Novorossiysk along with a symbolic large golden skeleton key.

From Seattle Times • Mar. 18, 2022

This word—“predations,” which Shapiro deployed repeatedly—is the skeleton key to this entire debate.

From Slate • Mar. 2, 2022

I remembered that the letter mentioned the silver dollar, fishing lure, and skeleton key.

From "Moon Over Manifest" by Clare Vanderpool

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023