Shiboleth or Shibboleth: How To spell?
The word Shiboleth is misspelled against Shibboleth, a noun meaning "A word which was made the criterion by which to distinguish the Ephraimites from the Gileadites. The Ephraimites, not being able to pronounce sh, called the word sibboleth. See Judges xii."
Shibboleth has double "bb" is mispronounced as "b"Remember double 'BB' in between the strings Shi & oleth which should not be misspelled with single 'B'
Wrong Spelling:  Shi-b-oleth  Correct Spelling:  Shi-bb-oleth 
Find more incorrect spellings of Shibboleth to spell right way.