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impervious

im·per·vi·ous

impervious

 
pronunciation:
ihm puhr vi s
features:
Word Parts
part of speech: adjective
definition 1: not allowing penetration or passage.
The new fabric is impervious to water.
antonyms:
permeable, pervious
similar words:
impenetrable, proof, repellent
definition 2: incapable of being affected by external forces or influences.
The judge was impervious to all pleas for mercy.She was a confident person but not impervious to criticism.
antonyms:
accessible, sensitive, susceptible
similar words:
impenetrable
definition 3: unable to be injured or damaged.
The stone wall was meant to be impervious to the ravages of weather.The ship was said to be impervious to attack.
derivations: imperviously (adv.), imperviousness (n.)
Word Parts
The word impervious contains the following parts:
im-2 Latin prefix that means not, without
Show wordsHide wordsMore about this word part:
The prefix im-2 occurs in Latin loanwords. It is an assimilated form of in-2 used before roots beginning with the letter "m," "p," and "b." See in-2.