Hastened hence to hide, being harassed (4)
I believe the answer is:
hied
'hastened hence' is the definition.
'hied' can be an answer for 'hastened' ('hie' can be a synonym of 'hasten'). I'm not certain of the 'hence' bit.
'hide being harassed' is the wordplay.
'being harassed' indicates an anagram.
'hide' with letters rearranged gives 'HIED'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for hied that I've seen before include "Hurried" , "Ran" , "Rushed" , "Went quickly (archaic)" , "Hastened" .)