Unsuspecting in turn, even conscious (7)
I believe the answer is:
unaware
'unsuspecting' is the definition.
(similar in meaning)
'turn even conscious' is the wordplay.
'even' indicates alternate letters (even-numbered letters are used).
'conscious' becomes 'aware' (associated in meaning).
The alternating letters of 'turn' are 'un'.
'un'+'aware'='UNAWARE'
'in' is the link.
(Other definitions for unaware that I've seen before include "Heedless" , "Totally ignorant" , "Unexpected" , "Not having knowledge or realisation" , "Ignorant, oblivious" .)