Partly suspect rumoured range of opinions? (8)
I believe the answer is:
spectrum
'range of opinions?' is the definition.
'partly suspect rumoured' is the wordplay.
'partly' indicates a hidden word (part of the clue is used).
'SPECTRUM' is hidden in the letters of 'suspect rumoured'.
(Other definitions for spectrum that I've seen before include "Bands of colour in crumpets" , "Wide range" , "'Broad range, scope (8)'" , "A broad range, of colours say" , "lot of colours" .)