Strange to support greed for MP’s full term, say (7)
I believe the answer is:
lustrum
'mp's full term say' is the definition.
I can't judge whether this definition defines the answer.
'strange to support greed' is the wordplay.
'strange' becomes 'rum' (synonyms).
'to' says to put letters next to each other (I've seen this in other clues).
'support greed' becomes 'lust' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'rum' put after 'lust' is 'LUSTRUM'.
'for' is the link.
Can you help me to learn more?
(Other definitions for lustrum that I've seen before include "Five-year period" , "Period of five years" , "Period of 20 ac years" , "several years" .)