He thought that she had become impervious to anything.

It was absorbing the properties of neutronium, becoming even more impervious than it had been before.

This time, the electrogel had become impervious to the water.

The resulting avalanche of global investment capital has become largely impervious, they say, to the political risks that often buffet Southeast Asia's accident-prone economies.

He would then experience a sudden second wind, fighting back while "feeding" off the energy of the audience, becoming impervious to attack-a process described as "Hulking up".

His brow shut and became impervious.

He had become impervious to pain.

One exception to this is seen in Kingdom Come, since in that novel, Superman has become impervious to kryptonite.

They're taking the bait, they're eating saltpeter, they're becoming impervious to excess, and to surprise.

Long since, Oldive had become impervious to such observations.