Your setter is assessed as very angry (5)

I believe the answer is:

irate

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'very angry' is the definition.
(I've seen this before)

'your setter is assessed' is the wordplay.
'your setter' becomes 'I' (the person writing the clues).
'is assessed' becomes 'rate' (I can't justify this - if you can you should believe this answer much more).
'i'+'rate'='IRATE'

'as' is the link.

Can you help me to learn more?

(Other definitions for irate that I've seen before include "Fuming" , "Angry, annoyed" , "Aggrieved" , "Cross, irritated" , "will be up in arms" .)

I've seen this clue in The Times.

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