Mad boozer keels over unconscious (5)

I believe the answer is:

rabid

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

'boozer keels over unconscious' is the wordplay.
'boozer' becomes 'bar'.
'keels over' is a reversal indicator.
'unconscious' becomes 'id' (I can't explain this - if you can you should give a lot more credence to this answer).
'bar' reversed gives 'rab'.
'rab'+'id'='RABID'

Can you help me to learn more?

(Other definitions for rabid that I've seen before include "Fanatical - hydrophobic" , "Violent; hydrophobic" , "Extreme, fanatical" , "Frenzied" , "Infected with hydrophobia" .)

I've seen this clue in The Times.

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