ɪnˈvaɪələbl̩ səˈkjʊə(ɹ) səˈkjʊɹ stɹɒŋ stɹɔŋ stɹɑŋ

ˌʌnəˈseɪləbl̩ immune to attack; incapable of being tampered with an impregnable fortress fortifications that made the frontier inviolable a secure telephone connection