impregnability

English Thesaurus

1. having the strength to withstand attack (noun.state)

hypernym	:	safety,
definition	:	the state of being certain that adverse effects will not be caused by some agent under defined conditions (noun.state)

derivation	:	impregnable, inviolable, secure, strong, unassailable, unattackable,
definition	:	immune to attack; incapable of being tampered with (adj.all)

derivation	:	impregnable, inviolable, secure, strong, unassailable, unattackable,
definition	:	immune to attack; incapable of being tampered with (adj.all)