Suspect had row about attachment (8)
I believe the answer is:
adhesion
'attachment' is the definition.
(I know that attachment can be written as adhesion)
'suspect had row about' is the wordplay.
'suspect' indicates an anagram (a suspicious or unusual spelling).
'row' becomes 'noise' (row can mean a disturbance or noise).
'about' is a reversal indicator.
'noise' back-to-front is 'esion'.
'had' is an anagram of 'adh'.
'adh'+'esion'='ADHESION'
(Other definitions for adhesion that I've seen before include "steady attachment" , "Process of sticking together" , "Adonis, he may be a sticker" , "Tackiness" , "strong attachment" .)