Sightprof or Sightproof: How To spell?
The word Sightprof is misspelled against Sightproof, an adjective meaning "Undiscoverable to sight."
Sightproof has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings sightpr & f which should not be misspelled with single 'O'
Wrong Spelling:  sightpr-o-f  Correct Spelling:  sightpr-oo-f 
Find more incorrect spellings of Sightproof to spell right way.