Your setter has a completely confident step (7)
I believe the answer is:
measure
'step' is the definition.
(synonyms)
'your setter has a completely confident' is the wordplay.
'your setter' becomes 'me' (the crossword setter of this puzzle).
'has' says to put letters next to each other.
'completely confident' becomes 'sure'.
'me'+'a'+'sure'='MEASURE'
(Other definitions for measure that I've seen before include "Shakespeare play: ''Measure for . . . . . . .''" , "Standard unit; dance" , "Take size of" , "Tape" , "See 6" .)