pertinacious

/หŒpษœหtษชหˆneษชสƒษ™s/

IPA: /P ER1 T IH0 N AE1 SH IH0 S/

adjective
  1. 1

    Holding tenaciously to an opinion or purpose.

  2. 2

    Stubbornly resolute or tenacious.

Source: https://en.wiktionary.org/wiki/pertinacious