impervious

“We have to have a larger portion of our groundwater recharge coming from managing rainwater, in getting rid of impervious surfaces and letting it infiltrate,” Winter said.

Existing regulations, it says, are “ineffective, costly, opaque, and largely impervious to reform.”

Providence’s alleged actions suggest that state laws protecting abortion rights are not impervious — and that would especially be so if Republicans regain the White House and control of Congress in the coming election.

Prinzhorn suggested that audiences responded to Hitler’s rhetorical devices — volume, rhythm, modulation, repetition — emotionally rather than rationally, which rendered him impervious to attack by political opponents.

His vision was to build an “ethical” sports car — safe, practical, impervious to rust and also “very beautiful aesthetically.”