Acclaim former tax cut (5)
I believe the answer is:
extol
'acclaim' is the definition.
(thesaurus)
'former tax cut' is the wordplay.
'former' becomes 'ex'.
'tax' becomes 'toll' (I've seen this in other clues).
'cut' means to remove the last letter.
'toll' with its last letter taken away is 'tol'.
'ex'+'tol'='EXTOL'
(Other definitions for extol that I've seen before include "trumpet" , "Proclaim" , "Praise with enthusiasm" , "Praise highly, laud" , "Highly rate" .)