Groovy attempt to secure goal (6)
I believe the answer is:
trendy
'groovy' is the definition.
(thesaurus)
'attempt to secure goal' is the wordplay.
'attempt' becomes 'try' (synonyms).
'to secure' means one lot of letters goes inside another (inserted letters are secured inside).
'goal' becomes 'end' (synonyms).
'try' placed around 'end' is 'TRENDY'.
(Other definitions for trendy that I've seen before include "In vogue" , "all the rage" , "Informally fashionable" , "Hot" , "Informally in the latest fashion" .)