Start to see in what way to reveal (4)
I believe the answer is:
show
'to reveal' is the definition.
(synonyms)
'start to see in what way' is the wordplay.
'start to' indicates taking the first letters.
'in what way' becomes 'how' (synonyms).
The initial letter of 'see' is 's'.
's'+'how'='SHOW'
(Other definitions for show that I've seen before include "Performance" , "event" , "Point out - parade" , "charade" , "Portray" .)