Snap (5)
'snap' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for photo that I've seen before include "Picture (abbr)" , "Snap, picture" , "Pic (abbr)" , "Camera picture" , "In brief, a snapshot" .)
'snap' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for sudden that I've seen before include "'Unexpectedly, without warning (6)'" , "Done quickly, no warning" , "Immediate and surprising" , "Unexpected, without warning" , "Rapid and unexpected" .)
'snap' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Another definition for go mad that I've seen is " Become insane".)