Not all abide asinine thoughts (5)
I believe the answer is:
ideas
'thoughts' is the definition.
('idea' can be a synonym of 'thought')
'not all abide asinine' is the wordplay.
'not all' says the answer is hidden in the clue (only some of the letters).
'IDEAS' can be found hidden inside 'abide asinine'.
(Other definitions for ideas that I've seen before include "Thoughts, creative perhaps" , "Thoughts, perceptions" , "Thoughts, concepts" , "thinking" , "Thoughts, personal views" .)