English version


From Longman Dictionary of Contemporary Englishpertinaciousper‧ti‧na‧cious /ˌpɜːtəˈneɪʃəs◂ $ ˌpɜːr-/ adjective formal  DETERMINEDcontinuing to believe something or to do something in a very determined way syn tenaciouspertinaciously adverbpertinacity /-ˈnæsəti/ noun [uncountable]
Examples from the Corpus
pertinaciousBut pupils of the more pertinacious sort profited greatly from his teaching and his company.
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