As odd a person as you'll ever meet! (8)
I believe the answer is:
stranger
'ever meet' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'as odd a person as you'll' is the wordplay.
I cannot quite understand how this works, but
'odd' could be 'strange' (I've seen this before) and 'strange' is found within the answer.
A single letter 'r' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for stranger that I've seen before include "More exotic" , "More unfamiliar or odd" , "someone making nuisance call?" , "Alien, foreigner" , "Non-acquaintance" .)