Crossword Genius

Writer’s unfinished work? I don’t like it (3)

Ross

I believe the answer is:

boo

I'm a little stuck... Click here to teach me more about this clue!

'writer's' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'unfinished work? i don't like it' is the wordplay.
'unfinished' means to remove the last letter.
'work?' becomes 'be' ('be' can be a synonym of 'work').
'i don't like it' becomes 'oo' (I can't explain this - if you can you should believe this answer much more).
'be' with its last letter taken away is 'b'.
'b'+'oo'='BOO'

Can you help me to learn more?

(Other definitions for boo that I've seen before include "Cry of contempt" , "Disapproving sound" , "I hated that!" , "I'm unimpressed" , "Catcall" .)

I've seen this clue in The Times.
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