Stories about weird set initially so insipid (9)
I believe the answer is:
tasteless
'insipid' is the definition.
(I've seen this before)
'stories about weird set initially so' is the wordplay.
'stories' becomes 'tales' ('tale' can be a synonym of 'story'**).
'about' indicates putting letters inside.
'weird' indicates anagramming the letters.
'initially' says to take the initial letters.
The first letter of 'so' is 's'.
'set' anagrammed gives 'ste'.
'tales' going around 'ste' is 'tasteles'.
'tasteles'+'s'='TASTELESS'
(Other definitions for tasteless that I've seen before include "improper" , "Vapid" , "Insipid - inappropriate - dull" , "Lacking flavour or ability to appreciate the beautiful" , "Unseemly" .)