Without hesitation he reaches this spot (4)
I believe the answer is:
here
'this spot' is the definition.
(I've seen this in another clue)
'without hesitation he' is the wordplay.
'without' indicates putting letters inside.
'hesitation' becomes 'er' (sound made while hesitating - um, er).
'er' put within 'he' is 'HERE'.
'reaches' is the link.
(Other definitions for here that I've seen before include ""___ be dragons" (old map inscription?)" , "The present location" , "On this spot" , "In this place - present" , "To hand" .)