Fairly delightful foreign language film replaces director (8)
I believe the answer is:
sweetish
'foreign language film replaces director' is the definition.
I can't tell whether this defines the answer.
'fairly delightful' is the wordplay.
I cannot really see how this works, but
'delightful' could be 'sweet' (both can mean pleasant or nice) and 'sweet' is located in the answer.
The remaining letters 'ish' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sweetish that I've seen before include "Rather cute" , "Rather sugary" .)