A writer sat it out after a tot (9)
I believe the answer is:
dramatist
'a writer' is the definition.
(I know that dramatist is a type of writer)
'sat it out after a tot' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'after' means one lot of letters go next to another.
'a tot' becomes 'dram' (I've seen this before).
'sat'+'it'='satit'
'satit' with letters rearranged gives 'atist'.
'atist' after 'dram' is 'DRAMATIST'.
(Other definitions for dramatist that I've seen before include "Pinter, say" , "One who writes plays" , "Shakespeare, say" , "Writer of plays" , "Coward perhaps" .)