Ardent Olympian getting a look in (7)
I believe the answer is:
zealous
'ardent' is the definition.
(synonyms)
'olympian getting a look in' is the wordplay.
'olympian' becomes 'zeus' (Greek god who lived on Mount Olympus).
'getting' indicates putting letters inside.
'look' becomes 'lo' (archaic exclamation meaning 'look!').
'in' is an insertion indicator.
'zeus' placed around 'a' is 'zeaus'.
'zeaus' placed around 'lo' is 'ZEALOUS'.
(Other definitions for zealous that I've seen before include "Very devoted to a cause" , "Intensely enthusiastic" , "Impassioned" , "Ardently active" , "Fervent" .)