Trump crude, reportedly? (4)
I believe the answer is:
'trump' is the definition.
'crude reportedly?' is the wordplay.
'crude' becomes 'rough' (similar in meaning).
'reportedly?' shows a homophone (sound like) (I've seen 'reportedly' mean this).
'rough' is a homophone of 'RUFF'.
(Other definitions for ruff that I've seen before include "Frilly collar" , "Circular pleated collar - trump" , "Starched frill collar" , "Eurasian sandpiper -- Australian fish" , "Starched, frilled collar" .)