Limited connection, with hesitation, in sexual activity (9)
I believe the answer is:
blinkered
'limited' is the definition.
(as in a limited vision or understanding)
'connection with hesitation in sexual activity' is the wordplay.
'connection' becomes 'link' (link is a kind of connection).
'with' means one lot of letters go next to another.
'hesitation' becomes 'er' (sound used when hesitating).
'in' is an insertion indicator.
'sexual activity' becomes 'bed' (to bed is to have sex with).
'link'+'er'='linker'
'linker' going into 'bed' is 'BLINKERED'.
(Another definition for blinkered that I've seen is " Unsighted by prejudice etc".)