He's forced to deliver but surprisingly he regains (9)

I believe the answer is:

garnishee

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

'he's forced to deliver' is the definition.
The definition suggests a singular noun but the answer is not.

'surprisingly he regains' is the wordplay.
'surprisingly' is an anagram indicator (a surprising ordering of the letters).
'he'+'regains'='heregains'
'heregains' is an anagram of 'GARNISHEE'.

'but' acts as a link.

Can you help me to learn more?

(Other definitions for garnishee that I've seen before include "one warned against paying" , "I must pay creditor for another" .)

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.