Reportedly unattractive flier (5)
I believe the answer is:
plane
'flier' is the definition.
'reportedly unattractive' is the wordplay.
'reportedly' indicates a 'sounds like' (homophone) clue.
'unattractive' becomes 'plain' ('plain' can be similar in meaning to 'unattractive').
'plain' sounds like 'PLANE'.
(Other definitions for plane that I've seen before include "Form of transport" , "Woodworking tool" , "Aircraft - level surface - carpenter's tool" , "Smooth" , "Flat surface; tree" .)