Dodgy South American spiritual, one convicts originally introduced (10)
I believe the answer is:
suspicious
'dodgy' is the definition.
(I've seen this before)
'south american spiritual one convicts originally introduced' is the wordplay.
'south american' becomes 'sus' (I am not sure about this - if you are sure you should believe this answer much more).
'spiritual' becomes 'pious' (pious means spiritual or religious).
'one' becomes 'i' (Roman numeral).
'originally' says to take the initial letters.
'introduced' indicates putting letters inside.
The first letter of 'convicts' is 'c'.
'i'+'c'='ic'
'pious' going around 'ic' is 'picious'.
'sus'+'picious'='SUSPICIOUS'
Can you help me to learn more?
(Other definitions for suspicious that I've seen before include "Dodgy" , "questionable" , "Doubtful" , "Shady; untrusting" , "Showing distrust" .)