Complete clip broadcast (5)
I believe the answer is:
sheer
'complete' is the definition.
(thesaurus)
'clip broadcast' is the wordplay.
'clip' becomes 'shear' (shearing is a kind of clipping).
'broadcast' indicates a 'sounds like' (homophone) clue (how the word might sound on the radio or TV).
'shear' is a homophone of 'SHEER'.
(Other definitions for sheer that I've seen before include "Very fine like silk stockings" , "Very thin and fine" , "Film" , "Mere" , "avoid an unpleasant thing" .)