Enormous creature in gym on steroids (7)
I believe the answer is:
monster
'enormous' is the definition.
(thesaurus)
'in gym on steroids' is the wordplay.
'in' indicates a hidden word.
'MONSTER' is hidden within 'gym on steroids'.
'creature' is the link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for monster that I've seen before include "See 10" , "Fabulous beast" , "Very big" , "something large and ugly" , "Ugly and frightening beast as in 8 Across" .)