Sightles or Sightless: How To spell?
The word Sightles is misspelled against Sightless, an adjective meaning "fensive unpleasing to the eye; unsightly; as, sightless stains."
Sightless has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  sightle-s  Correct Spelling:  sightle-ss 
Find more wrongly spelled words of Sightless to spell it well.