Crossword Genius

Prophet put back a tiny amount of weight on very hot day (9)

Ross

I believe the answer is:

zoroaster

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

'prophet' is the definition.
(I know that Zoroaster is a prophet)

'very hot day' is the wordplay.
'very' becomes 'zo' (I can't explain this - if you can you should give a lot more credence to this answer).
'hot day' becomes 'roaster' (I've seen this before).
'zo'+'roaster'='ZOROASTER'

'put back a tiny amount of weight on' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for zoroaster that I've seen before include "Religious leader" , "Persian prophet" .)

I've seen this clue in The Guardian.
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.