penetrable

As last weekend’s tightrope walk shows, the site remains penetrable.

"Since the bacteria are living organisms, over time they developed a resistance, in the form of a less penetrable membrane, to traditional disinfectants," Sánchez explained.

"The inviolability of the royal harem, penetrable only by the emperor - housing glorious and untouchable women… was meant to be proof of his near divinity," Lal writes.

They traveled from state to state—anywhere there was a bank that Leslie deemed penetrable.

And then there are steel ceilings, ones that are not penetrable, no matter what skills, education or work ethic a person brings.