Computers and such held back in hostile market (9)
I believe the answer is:
advertise
'market' is the definition.
(I've seen this before)
'computers and such held back in hostile' is the wordplay.
'computers and such' becomes 'it' (I can't justify this - if you can you should believe this answer much more).
'held back' says the letters should be written backwards.
'in' is an insertion indicator.
'hostile' becomes 'adverse' (I've seen this in another clue).
'it' reversed gives 'ti'.
'ti' going into 'adverse' is 'ADVERTISE'.
Can you help me to learn more?
(Other definitions for advertise that I've seen before include "Call public attention to" , "Give publicity to" , "Publicise, promote" , "Publicise, call attention to" , "Varied set (anag.)" .)