New eastern editor with singular requirements (5)
I believe the answer is:
needs
'requirements' is the definition.
('need' can be a synonym of 'requirement')
'new eastern editor with singular' is the wordplay.
'new' becomes 'n' (abbreviation as in New Testament NT).
'eastern' becomes 'e'.
'editor' becomes 'ed' (abbreviation).
'with' is a charade indicator (letters next to each other).
'singular' becomes 's' (abbreviation sometimes used in dictionaries).
'n'+'e'+'ed'+'s'='NEEDS'
(Other definitions for needs that I've seen before include "Essentials" , "Requires or lacks" , "Demands" , "Necessities" , "Requires, is in want of" .)