tenacious
/təˈneɪʃəs/
persistent and determined; holding firmly to a purpose
tenacious in a sentence
“Her tenacious pursuit of the truth eventually cracked the case open.”
Origin of tenacious
Latin tenax, tenac- holding fast, from tenere to hold
Related Words
astute
having a sharp, accurate judgment; perceptive and shrewd
meticulous
showing great attention to detail; very careful and precise
candid
frank, open, and honest in expression
amiable
having a pleasant, friendly manner
diligent
showing careful, persistent effort in work or duty
eloquent
fluent and persuasive in speaking or writing