Rebel male greeting Little Richard? (8)
I believe the answer is:
maverick
'rebel' is the definition.
(I know that rebel can be written as maverick)
'male greeting little richard?' is the wordplay.
'male' becomes 'm' (common abbreviation).
'greeting' becomes 'ave' (Latin greeting).
'little richard?' becomes 'rick' (short for Richard).
'm'+'ave'+'rick'='MAVERICK'
(Other definitions for maverick that I've seen before include "Person with independent or unorthodox views" , "Unorthodox or independent-minded person" , "Unpredictable sort of person" , "Renegade" , "One who ignores the party line" .)