Bride asked to reveal thoughts (5)
I believe the answer is:
ideas
'thoughts' is the definition.
('idea' can be a synonym of 'thought')
'bride asked to reveal' is the wordplay.
'to reveal' indicates the answer is hidden within the clue.
'IDEAS' can be found hidden inside 'bride asked'.
(Other definitions for ideas that I've seen before include "Thoughts, perceptions" , "Thoughts, creative perhaps" , "Thoughts, maybe creative" , "Notions, thoughts" , "Brain waves" .)