Managed to find time for rave (4)
I believe the answer is:
rant
'for rave' is the definition.
(synonyms)
'managed to find time' is the wordplay.
'managed' becomes 'ran' (I've seen this in another clue).
'to find' says to put letters next to each other.
'time' becomes 't' (abbreviation).
'ran'+'t'='RANT'
(Other definitions for rant that I've seen before include "Bombastically declaim" , "Intemperate speech" , "Talk wildly and incoherently" , "Talk wildly, rave" , "Loud and emotional declamation" .)