Looked curiously into the source of pride (5)
I believe the answer is:
pried
'looked curiously' is the definition.
'pried' can be an answer for 'looked' (prying is a kind of looking). I'm not sure about the 'curiously' bit.
'the source of pride' is the wordplay.
'the source of' is an anagram indicator.
'pride' is an anagram of 'PRIED'.
'into' acts as a link.
Can you help me to learn more?
(Other definitions for pried that I've seen before include "Nosed into" , "acted inquisitively" , "Made intrusive enquiries" , "Snooped" , "Speaking of sin" .)