Quick, you may have a bad turn (5)

I believe the answer is:

alive

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'quick' is the definition.
(I've seen this in another clue)

'a bad turn' is the wordplay.
'bad' becomes 'evil' (associated in meaning).
'turn' says the letters should be written in reverse.
'evil' backwards is 'live'.
'a'+'live'='ALIVE'

'you may have' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for alive that I've seen before include "Still in use, not dead" , "Go or walk briskly" , "surviving" , "Extant" , "Existent" .)

I've seen this clue in The Irish News.

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