impregnable, adj.
freq. cnt. 1
freq. cnt. 1
immune to attack; incapable of being tampered with
<adj.all> freq. cnt.: 1 freq. cnt.: 1
impregnable inviolable secure strong unassailable unattackable
sample sentences
"an impregnable fortress""fortifications that made the frontier inviolable"
"a secure telephone connection"
lexical pointers
derivationally related form
lexical pointers
derivationally related form
semantic pointers
similar to
incapable of being overcome, challenged or refuted
<adj.all>
impregnable inexpugnable
sample sentences
"an impregnable argument""impregnable self-confidence"
semantic pointers
similar to
capable of conceiving
<adj.all>
conceptive impregnable