Blow-by-blow account at first after cast get very angry (5,1,6)
I believe the answer is:
throw a wobbly
'very angry' is the definition.
I can't tell whether this defines the answer.
'blow-by-blow account at first after cast' is the wordplay.
'blow' is an anagram indicator (I've seen 'blown' mean this (to blow can mean to disrupt or scatter)).
'at first' suggests taking the first letters.
'after' means one lot of letters go next to another.
'cast' becomes 'throw' (synonyms).
The initial letter of 'account' is 'a'.
'by'+'blow'+'a'='byblowa'
'byblowa' with letters rearranged gives 'awobbly'.
'awobbly' after 'throw' is 'THROW A WOBBLY'.
'get' is the link.
Can you help me to learn more?
(Other definitions for throw a wobbly that I've seen before include "Go ballistic" , "Suddenly blow a fuse" , "Have a tantrum (colloq.)" , "Have a (jelly-like?) tantrum" , "Become very angry" .)