Goggles in the mist are steamed up (6)
I believe the answer is:
stares
'goggles' is the definition.
(I've seen this in another clue)
'in the mist are steamed up' is the wordplay.
'in' indicates a hidden word.
'STARES' can be found hidden inside 'mist are steamed up'.
(Other definitions for stares that I've seen before include "Looks lengthily at" , "Assert with long looks" , "Long gazes" , "Looks fixedly" , "Looks hard" .)