Steven Lynch holds on steadily (6)
I believe the answer is:
'steadily' is the definition.
(I've seen this in another clue)
'steven lynch holds' is the wordplay.
'holds' indicates a hidden word.
'EVENLY' can be found hidden inside 'steven lynch'.
'on' acts as a link.
(Other definitions for evenly that I've seen before include "In smooth or level manner" , "In measured and level way" , "In measured or level manner" , "on an equal footing" , "in a uniform way" .)