Wrinkled royal stopped outside (7)
I believe the answer is:
creased
'wrinkled royal stopped outside' is the definition.
'creased' can be an answer for 'wrinkled' ('crease' can be a synonym of 'wrinkle'). I am unsure of the 'royal stopped outside' bit.
'wrinkled royal stopped outside' is the wordplay.
'wrinkled royal' becomes 'r' (abbreviation. I am not sure about the 'wrinkled' bit.).
'stopped' becomes 'ceased' ('cease' can be a synonym of 'stop').
'outside' indicates putting letters inside.
'r' inserted inside 'ceased' is 'CREASED'.
Can you help me to learn more?
(Other definitions for creased that I've seen before include "Folded" , "Needing to be ironed?" , "Crumpled - red case (anag)" , "Needing ironing" , "Wrinkled, rumpled" .)