Crossword Genius

Unknown listener visiting for twelve months (4,5)

Ross

I believe the answer is:

year round

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

'unknown' is the definition.
Both the definition and answer are adjectives. Perhaps there's an association between them I don't understand?

'listener visiting for twelve months' is the wordplay.
'listener visiting' becomes 'round' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'for' means one lot of letters go next to another (I've seen this in other clues).
'twelve months' becomes 'year' (I've seen this in another clue).
'round' put after 'year' is 'YEAR-ROUND'.

Can you help me to learn more?

(Another definition for year round that I've seen is " every season".)

I've seen this clue in The Daily Express.
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.