Tip: go over with it (6)
I believe the answer is:
trendy
'with it' is the definition.
(I've seen this before)
'tip go over' is the wordplay.
'tip' becomes 'end'.
'go' becomes 'try' (both can mean an attempt).
'over' means one lot of letters goes inside another.
'end' put inside 'try' is 'TRENDY'.
(Other definitions for trendy that I've seen before include "With it, a la mode" , "'Hip, fashionable (6)'" , "Chic (colloq.)" , "Up to date, fashionable" , "With-it" .)