Side on settee regularly getting ruffled (7)
I believe the answer is:
stewing
'getting ruffled' is the definition.
I can't tell whether this definition defines the answer.
'side on settee regularly' is the wordplay.
'side' becomes 'wing' (I've seen this in other clues).
'on' says to put letters next to each other.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternating letters of 'settee' are 'ste'.
'wing' after 'ste' is 'STEWING'.
Can you help me to learn more?
(Other definitions for stewing that I've seen before include "appearing anxious" , "(Of tea) becoming too strong and bitter" .)