Praise, laud (5)
I believe the answer is:
extol
This clue is a double definition.
'praise' is the first definition.
(extolling is a kind of praising)
'laud' is the second definition.
(synonyms)
(Other definitions for extol that I've seen before include "Praise - honour" , "Proclaim" , "Laud; glorify" , "be lavish with praise" , "Highly commend" .)