Clothes being taken off in films I'd unwittingly looked up (6)
I believe the answer is:
nudism
'clothes being taken off' is the definition.
I can't tell whether this definition defines the answer.
'in films i'd unwittingly looked up' is the wordplay.
'in' indicates a hidden word.
'looked up' says the letters should be written in reverse (I've seen 'looking up' mean this (in a down clue, letters go up)).
'msidun' is hidden within 'films id unwittingly'.
'msidun' in reverse letter order is 'NUDISM'.
Can you help me to learn more?
(Other definitions for nudism that I've seen before include "Public exposure" , "early practice in Eden" , "Mind us (anag)" , "Pursuit of a naturist" , "Practice of going naked" .)