Sidestep first woman with a key (5)
I believe the answer is:
evade
'sidestep' is the definition.
(I know that sidestep can be written as evade)
'first woman with a key' is the wordplay.
'first woman' becomes 'eve' (first woman in the bible).
'with' indicates putting letters inside.
'key' becomes 'd' (musical key).
'a'+'d'='ad'
'eve' going around 'ad' is 'EVADE'.
(Other definitions for evade that I've seen before include "Dodge or equivocate" , "Dodge, stay clear of" , "Fail to pay" , "To get away from" , "Dodge or escape" .)