One who cultivates danger, moving with hesitation (8)
I believe the answer is:
gardener
'one who cultivates' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'danger moving with hesitation' is the wordplay.
'moving' is an anagram indicator (letters are moved around).
'with' says to put letters next to each other.
'hesitation' becomes 'er' (sound made while hesitating - um, er).
'danger' with letters rearranged gives 'garden'.
'garden'+'er'='GARDENER'
Can you help me to learn more?
(Other definitions for gardener that I've seen before include "Nursery employee" , "Tender of plants" , "Horticulturalist" , "Horticulturist" , "One growing plants" .)