Wanda appears pale at first (3)
I believe the answer is:
wan
'pale at first' is the definition.
'wan' can be an answer for 'pale' (wan can mean pale or grey). I am not certain of the 'at first' bit.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for wan that I've seen before include "Faint" , "Pale from sickness" , "Blanched" , "Pale and weak-looking" , "Pale and ill-looking" .)