Be a dilettante (6)
I believe the answer is:
dabble
'be a dilettante' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for dabble that I've seen before include "Tinker" , "Splash or engage superficially in (6)" , "Take cursory interest (in)" , "Engage in dilettante style" , "Participate in a desultory manner" .)