Tenacious
/təˈneɪʃəs/
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Definition
(adj) Clinging to an object or surface; adhesive.
Sentence Examples
To survive in a hostile environment, one must be able to improvise and be tenacious.
Metaphors are much more tenacious than facts.
CEFR Practice Quiz
She is a very ____ researcher who never gives up until she finds the answer to a difficult scientific question today.