One fashionable piece of writing? Could be yes and no (8)
I believe the answer is:
antonyms
'be yes and no' is the definition.
I can't judge whether this defines the answer.
'one fashionable piece of writing?' is the wordplay.
'one' becomes 'an' (an apple is one apple).
'fashionable' becomes 'tony' (I've seen this in another clue).
'piece of writing?' becomes 'ms' (abbreviation for manuscript).
'an'+'tony'+'ms'='ANTONYMS'
'could' is the link.
Can you help me to learn more?
(Other definitions for antonyms that I've seen before include "sickness and health for example" , "Words opposite in meaning to others" , "They are opposed" , "My son, Nat, turns to words which are opposite in meaning" , "'Good' and 'bad' are examples" .)