Swaying cedars caused fear (6)
I believe the answer is:
scared
'caused fear' is the definition.
Although both the answer and definition are past participle verbs, I can't see how they can define each other.
'swaying cedars' is the wordplay.
'swaying' indicates an anagram (letters swaying or moving around).
'cedars' anagrammed gives 'SCARED'.
Can you help me to learn more?
(Other definitions for scared that I've seen before include "having kittens" , "Afraid of cedars" , "Frightened or intimidated" , "Afraid, anxious" , "Thing which precipitates an event" .)