Strange, unfriendly idler ousted, unexpectedly (5)
I believe the answer is:
funny
'strange' is the definition.
(synonyms)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for funny that I've seen before include "Strange; comic" , "Droll -- suspicious" , "Comical" , "Hilarious" , "Strange; humorous" .)