Showy dresser, extremely dishy? (5)
I believe the answer is:
dandy
'showy dresser' is the definition.
(term for a well-dressed man)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for dandy that I've seen before include "Playboy" , "See 6" , "Fine for American" , "Beau" , "Fashionable fellow" .)