Suspicious about townie on vacation getting tasteless (6)
I believe the answer is:
watery
'tasteless' is the definition.
(thesaurus)
'suspicious about townie on vacation' is the wordplay.
'suspicious' becomes 'wary' (I've seen this before).
'about' indicates putting letters inside.
'on vacation' suggests removing the centre.
'townie' with its middle taken out is 'te'.
'wary' placed around 'te' is 'WATERY'.
'getting' acts as a link.
(Other definitions for watery that I've seen before include "(Of food) thin, tasteless" , "Dilute; weak, pale" , "Weak, too diluted" , "Overly diluted, thin" , "Insipid" .)