Asibilate or Assibilate: How To spell?
The word Asibilate is misspelled against Assibilate, a verb meaning "To make sibilant; to change to a sibilant."
Assibilate has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings a & ibilate which should not be misspelled with single 'S'
Wrong Spelling:  a-s-ibilate  Correct Spelling:  a-ss-ibilate 
Find more wrongly spelled words of Assibilate to spell it well.