Impervious and Impenetrable
The synonyms impervious and impenetrable have similar meanings, but, depending on context, one is preferable to the other. The words are used both literally and figuratively. Here are their literal meanings: impervious: Through which there is no way; not affording passage (to); not to be passed through or penetrated; impenetrable, impermeable, impassable. impenetrable: That cannot … Read more