Strange aspect is unrealistic (8)
I believe the answer is:
escapist
'strange aspect is unrealistic' is the definition.
I can't tell whether this definition defines the answer.
'strange aspect is' is the wordplay.
'strange' indicates an anagram.
'aspect'+'is'='aspectis'
'aspectis' anagrammed gives 'ESCAPIST'.
Can you help me to learn more?
(Other definitions for escapist that I've seen before include "One indulging in fantasy" , "I fantasise" , "One who habitually fantasises" , "Walter Mitty" , "Dreamer, wishful thinker" .)