Thought I would get enigma solved (8)
I believe the answer is:
imagined
'thought' is the definition.
('imagine' can be a synonym of 'think')
'i would get enigma solved' is the wordplay.
'i would' becomes 'I'd'.
'get' means one lot of letters goes inside another.
'solved' is an anagram indicator (the anagram must be solved).
'enigma' is an anagram of 'magine'.
'id' going around 'magine' is 'IMAGINED'.
(Other definitions for imagined that I've seen before include "Supposed" , "Formed a mental picture" , "Formed a mental image" , "Dreamt up" , "Created mentally" .)