Loathed company bigwig briefly admired (9)

I believe the answer is:

execrated

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'loathed' is the definition.
('execrate' can be a synonym of 'loathe')

'company bigwig briefly admired' is the wordplay.
'company bigwig' becomes 'exec' (I've seen this in another clue).
'briefly admired' becomes 'rated' (I've seen this before. I am not sure about the 'briefly' bit.).
'exec'+'rated'='EXECRATED'

Can you help me to learn more?

(Other definitions for execrated that I've seen before include "Condemned" , "Cursed; detested" .)

I've seen this clue in The Daily Express.

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