Cheers without rising for decoration (6)
I believe the answer is:
tassel
'decoration' is the definition.
(tassel is a kind of decoration)
'cheers without rising' is the wordplay.
'cheers' becomes 'ta' (I've seen this in other clues).
'without' becomes 'less'.
'rising' is a reversal indicator (going up in a down clue).
'less' back-to-front is 'ssel'.
'ta'+'ssel'='TASSEL'
'for' acts as a link.
(Other definitions for tassel that I've seen before include "Hanging tuft of threads" , "Mortar board attachment" , "Ornamental hanging tuft" , "Tuft on e.g. cap" , "Slates attached to ornamental bunch of threads" .)