In an impervious manner; impenetrably; impermeably.(adverb)
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Use "imperviously" in a sentence
"He won his sport's pinnacle race seven times after being diagnosed with one of the world's most notorious diseases, all the while symbolizing an imperviously celestial energy."
"Do you really imagine that lazy, imperviously-privileged, arrogant Bush and his amoral macchiavel, the former genius Karl Rove, would be too smart or principled to do such a thing?"
"This is classic CF symptomology-- persistent lurking lung and sinus and ear bacteria becoming more and more antibiotic- resistant and hiding semi- imperviously in the mucus."