Speak as drunk turning up in Leinster? Ulster (4)
I believe the answer is:
slur
'speak as drunk turning' is the definition.
'slur' can be an answer for 'speak' (slurring is a kind of speaking). I am not certain of the 'as drunk turning' bit.
'up in leinster? ulster' is the wordplay.
'up' is a reversal indicator (in down clue: letters go upwards).
'in' indicates a hidden word.
'ruls' can be found hidden inside 'leinster ulster'.
'ruls' back-to-front is 'SLUR'.
Can you help me to learn more?
(Other definitions for slur that I've seen before include "Disparagement" , "Pronounce indistinctly with each sound running into the next" , "Slight; blur" , "Disparaging remark" , "Insinuation, allegation" .)