He and I arrange to hasten forth (3)
I believe the answer is:
hie
'hasten forth' is the definition.
'hie' can be an answer for 'hasten' (synonyms). I'm unsure of the 'forth' bit.
'he and i arrange' is the wordplay.
'and' is a charade indicator (letters next to each other).
'arrange' indicates anagramming the letters.
'he' after 'i' is 'ihe'.
'ihe' anagrammed gives 'HIE'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for hie that I've seen before include "Hasten" , "Be quick (lit.)" , "Go quickly (archaic)" , "Make one's way quickly" , "Hurry" .)