Most want to keep India secular (4)
I believe the answer is:
laic
'secular' is the definition.
(synonyms)
'most want to keep india' is the wordplay.
'most want' becomes 'lac' (I can't justify this - if you can you should give a lot more credence to this answer).
'to keep' indicates putting letters inside.
'india' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'lac' enclosing 'i' is 'LAIC'.
Can you help me to learn more?
(Other definitions for laic that I've seen before include "belonging to the people" , "Of those not members of the clergy" , "Unlike minister" , "Non-clergy" , "outside the church" .)