Unknown person, funnier (8)
I believe the answer is:
stranger
This could be a double definition.
'unknown person' is the first definition.
(I've seen this before)
'funnier' is the second definition.
Both the answer and definition are comparative adjectives. Perhaps you can see an association between them that I don't see?
Can you help me to learn more?
(Other definitions for stranger that I've seen before include "visitor" , "Truth can be ... than fiction" , "'Fact is ........ than fiction'" , "More exotic" , "Alien, foreigner" .)