French couturier upset about English wrongdoing? Sticky! (8)

'sticky' is the definition.

'french couturier upset about english wrongdoing?' is the wordplay.
'french couturier' becomes 'dior' (Christian Dior).
'upset' says the letters should be written backwards.
'about' indicates putting letters inside.
'english' becomes 'e' (abbreviation).
'wrongdoing?' becomes 'sin' (sin is a kind of wrongdoing**).
'dior' back-to-front is 'roid'.
'e'+'sin'='esin'
'roid' going around 'esin' is 'RESINOID'.