

Mia sorella è tenace, non si arrende mai.
[ˈmia soˈrɛlla ˈɛ teˈnatʃe, ˈnon si arrende ˈmai̯.]
My sister is determined; she never gives up.
Bisogna essere tenaci per trovare lavoro oggi.
[biˈzoɲɲa ˈɛssere teˈnatʃi ˈper troˈvare laˈvoro ˈɔddʒi.]
You have to be persistent to find a job these days.
Non conosco una persona più tenace di Marco.
[ˈnon koˈnosko ˈuna perˈsona pju teˈnatʃe di ˈmarko.]
I don't know anyone more determined than Marco.
"tenace" is in the lesson "Adjectives 6" (Level 40), along with 10 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.