Get involved (4,2)
'get involved' is the definition.
(synonyms)
This is all the clue.
(Other definitions for step in that I've seen before include "enter" , "Intervene dramatically, or at a senior level" , "Shoe with no fastenings" , "Substitute" , "Type of garment" .)
'get involved' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for engage that I've seen before include "Take someone on as a worker" , "Take on, hire" , "Morally committed to" , "Occupy (interest)" , "Employ as a worker" .)
(Other definitions for partake that I've seen before include "Join (in an activity)" , "To take some (of food, etc)" , "Be involved" , "try a few?" , "Share, consume" .)