tenaz (bn):
hardnekkig(en) unwilling to yield from a point of view etc; dogged.
(en) stubbornly persevering, steadfast.
(en) tenacious., flexibel(en) able to withstand force without cracking; elastic., veerkrachtig(en) able to withstand force without cracking; elastic., verbeten(en) stubbornly persevering, steadfast.
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