tenace (bn):
hardnekkig(en) stubbornly persevering, steadfast.
(en) tenacious.
(en) unwilling to yield from a point of view etc; dogged., vasthoudend(en) stubbornly resolute or tenacious., verbeten(en) stubbornly persevering, steadfast., viskeus(ru) тягучий, клейкий., volhardend(en) refusing to give up., voortdurend(en) unremitting, steady and persistent.
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