Horisonous or Horrisonous: How To spell?
The word Horisonous is misspelled against Horrisonous, an adjective meaning "Sounding dreadfully; uttering a terrible sound."
Horrisonous has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings ho & isonous which should not be misspelled with single 'R'
Wrong Spelling:  ho-r-isonous  Correct Spelling:  ho-rr-isonous 
Check more misspelled words of Horrisonous to spell it correct.