Crossword Genius

Perhaps use caution — departing unionist is stubborn (9)

Ross

I believe the answer is:

tenacious

I'm a little stuck... Click here to teach me more about this clue!

'stubborn' is the definition.
(similar in meaning)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for tenacious that I've seen before include "refusing to give up", "Persevering", "Holding fast", "Holding or sticking firmly", "Persistent in holding on".)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.