Little chap said to be a six footer! (3)
I believe the answer is:
nat
'little chap' is the definition.
'Nat' can be an answer for 'chap'. I'm unsure of the 'little' bit.
'said to be a six footer' is the wordplay.
'said' becomes 't' (I've seen this in other clues).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'be a six footer' becomes 'na' (I am not sure about this - if you are sure you should believe this answer much more).
't' after 'na' is 'NAT'.
Can you help me to learn more?
(Other definitions for nat that I've seen before include "Politician" , "Supporter of the SNP (abbr)" , "King Cole" , "A nationalist" .)