Required any speech to have two editors (6)
I believe the answer is:
needed
'required' is the definition.
(synonyms)
'any speech to have two editors' is the wordplay.
'two editors' means two replacements for 'editor'.
'any speech' becomes 'ne' (I can't justify this - if you can you should give a lot more credence to this answer).
'to have' says to put letters next to each other.
'editor' becomes 'ed' (abbreviation).
'editor' becomes 'ed' (abbreviation).
'ne'+'ed'+'ed'='NEEDED'
Can you help me to learn more?
(Other definitions for needed that I've seen before include "Required something essential" , "Was in want of" , "'Wanted, required (6)'" , "Obligatory" , "Required, necessary" .)