🇬🇧 en pl 🇵🇱

pertinacious adjective

  /pɝtn̩ˈeɪʃəs/ , /ˌpɜːtɪˈneɪʃəs/
  • Holding tenaciously to an opinion or purpose.
 niezachwiany

pertinaciously adverb

  /ˌpɜː.təˈneɪ.ʃəs.li/ , /ˌpɝːtənˈeɪʃəsli/
  • In a stubbornly resolute manner; tenaciously holding one's course of action or opinion.
 nieustępliwie
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