Fashionable milliner is beginning to tire in a way (7)
I believe the answer is:
modiste
'fashionable milliner' is the definition.
'modiste' can be an answer for 'milliner' (synonyms). I am unsure of the 'fashionable' bit.
'is beginning to tire in a way' is the wordplay.
'beginning to' suggests taking the first letters.
'in' is an insertion indicator.
'a way' becomes 'mode' (synonyms).
The first letter of 'tire' is 't'.
'is'+'t'='ist'
'ist' put inside 'mode' is 'MODISTE'.
Can you help me to learn more?
(Other definitions for modiste that I've seen before include "couturier" , "old dressmaker" , "Posh milliner or dressmaker" , "Fasionable dressmaker" .)