Impervious
hardNeutral toneim-PUR-vee-us
adjective
Definition
incapable of being affected or penetrated
Memory hook
IMPERVIOUS = 'IM (no) + PER + VIA (way through)': no WAY THROUGH; nothing penetrates or affects it.
Word roots
Learning roots unlocks whole word families. Study common GRE root words.
Examples
“He was impervious to criticism, brushing off every harsh review.”
“The coating makes the fabric impervious to water.”
Test yourself
Fill in the blank with the right word:
“He was ______ to criticism, brushing off every harsh review.”
Show answer
impervious
Synonyms
Antonyms
Categories
GRE Tip
Impervious is a hard-difficulty GRE word. On the GRE, you might see it paired with synonyms like "impenetrable" or "unaffected" in Sentence Equivalence questions. Look for contrast clues (however, despite, although) that signal the opposite meaning. Words like "susceptible".
Related GRE Words
equanimity
mental calmness and composure, especially under stress
impassive
showing no emotion or expression
imperturbable
unable to be upset or agitated; calm
implacable
unable to be appeased or pacified; relentless
irascible
easily angered; quick-tempered
opaque
Not able to be seen through; not transparent; difficult to understand
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