Fervent help around five (4)
I believe the answer is:
avid
'fervent' is the definition.
(I've seen this before)
'help around five' is the wordplay.
'help' becomes 'aid' (synonyms).
'around' indicates putting letters inside.
'five' becomes 'V' (Roman numeral).
'aid' going around 'v' is 'AVID'.
(Other definitions for avid that I've seen before include "'Eager, enthusiastic (4)'" , "Impassioned about diva" , "Showing a very keen interest in something" , "Mad for diva" , "Very keen, desirous" .)