tenacious
adjective/təˈneɪʃəs/
/təˈneɪʃəs/
(formal)- that does not stop holding something or give up something easily; determined
- a tenacious grip
- She's a tenacious woman. She never gives up.
- The party has kept its tenacious hold on power for more than twenty years.
- continuing to exist, have influence, etc. for longer than you might expect synonym persistent
- a tenacious illness
Word Originearly 17th cent.: from Latin tenax, tenac- (from tenere ‘to hold’) + -ious.
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tenacious