Odd clue about new relative (5)
I believe the answer is:
uncle
'relative' is the definition.
(uncle is a kind of relative)
'odd clue about new' is the wordplay.
'odd' indicates alternate letters.
'about' says to put letters next to each other.
'new' becomes 'unc' (I am not sure about this - if you are sure you should believe this answer much more).
The alternating letters of 'clue' are 'le'.
'le' after 'unc' is 'UNCLE'.
Can you help me to learn more?
(Other definitions for uncle that I've seen before include "Male relative - pawnbroker" , "A parent's brother" , "Brother of one's parent" , "Grandfather's son" , "Family relation" .)