tenacious
te-na-cious/təˈneɪʃəs/US
adjective
- 1
Holding on firmly; refusing to give up.
A tenacious reporter kept asking until the records were released.
Etymology
From Latin tenax, "holding fast", from tenere ("to hold").
Synonyms
Also useful for “tenacious”:Unscrambler— Rearrange the letters in “tenacious”