Slured or Slurred: How To spell?
The word Slured is misspelled against Slurred, an adjective meaning "Marked with a slur; performed in a smooth, gliding style, like notes marked with a slur."
Slurred has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings slu & ed which should not be misspelled with single 'R'
Wrong Spelling:  slu-r-ed  Correct Spelling:  slu-rr-ed 
Check more misspelled words of Slurred to spell it correct.