impregnable
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.
That had seemed like an impregnable advantage for S&P Global.
Alcatraz island - nicknamed "the Rock" because it was regarded as an impregnable fortress - is home to the shuttered federal penitentiary that housed some of the most dangerous criminals in the US.
From BBC
In theory that threatens Apple’s impregnable walled garden.
In 2015, the seemingly impregnable Central Belt – and beyond – in Scotland fell to the Scottish National Party from Labour.
From BBC
“Some criminals have understood that museums are not impregnable cultural fortresses,” said Pierre Noual, a French lawyer specializing in cultural heritage law.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
