Person one particularly dislikes, Robin, tee off starting early (4,5)
I believe the answer is:
bete noire
'person one particularly dislikes' is the definition.
I can't tell whether this definition defines the answer.
'robin tee off starting early' is the wordplay.
'off' is an anagram indicator.
'starting' indicates taking the first letters.
The initial letter of 'early' is 'e'.
'robin'+'tee'='robintee'
'robintee' anagrammed gives 'betenoir'.
'betenoir'+'e'='BETE NOIRE'
Can you help me to learn more?
(Other definitions for bete noire that I've seen before include "Person or thing one particularly dislikes" , "undesirable" , "Particular object of loathing" , "Particular dislike" , "Object of aversion" .)