Found 35 synonyms in 7 groups
  1. 1
    Meaning: indomitable
  1. 2
    Meaning: unconquerable
  2. 3
    Meaning: fast
    impregnable strong resistant
  3. 4
    Meaning: resistant
    fast strong impregnable
  4. 5
    Meaning: property
  1. 6
    Meaning: defensible
    justifiable impregnable tenable
  2. 7
    Meaning: dreadful

impregnable synonyms - English related words for impregnable