Uncomplicated type, not altogether sensible, shoots back (8)
I believe the answer is:
sanserif
'uncomplicated type' is the definition.
'sanserif' can be an answer for 'type' (I've seen this before). I am not sure about the 'uncomplicated' bit.
'altogether sensible shoots back' is the wordplay.
'altogether sensible' becomes 'san' (I can't explain this - if you can you should believe this answer much more).
'shoots' becomes 'fires' (firing is a kind of shooting).
'back' is a reversal indicator.
'fires' in reverse letter order is 'serif'.
'san'+'serif'='SANSERIF'
'not' acts as a link.
Can you help me to learn more?
(Other definitions for sanserif that I've seen before include "font" , "Fairness (anag) - printing type" , "Like the simplest type" , "Printing type style" , "Type without projection on letters" .)