Unsophisticated church body touring India (5)
I believe the answer is:
naive
'unsophisticated' is the definition.
(similar in meaning)
'church body touring india' is the wordplay.
'church body' becomes 'nave' (part of a church building).
'touring' means one lot of letters goes inside another (touring can mean going round).
'india' becomes 'i' (phonetic alphabet: alpha, bravo, charlie etc.).
'nave' enclosing 'i' is 'NAIVE'.
(Other definitions for naive that I've seen before include "Lacking judgment" , "Excessively trusting or innocent" , "Ingenuous and credulous" , "Simple in style or behaviour" , "Wet behind ears" .)