Break suddenly (4)
'break suddenly' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for snap that I've seen before include "Break suddenly with cracking sound" , "Break sharply - a simple card game" , "Card game for children" , "you may take on holiday" , "unexpected? > Same here!" .)
'break suddenly' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for shatter that I've seen before include "Crack" , "Ruin" , "Support for broken arm" , "thoroughly upset" , "Break suddenly" .)