Flabergast or Flabbergast: How To spell?
The word Flabergast is misspelled against Flabbergast, a verb meaning "To astonish; to strike with wonder, esp. by extraordinary statements."
Flabbergast has double "bb" is mispronounced as "b"Remember double 'BB' in between the strings Fla & ergast which should not be misspelled with single 'B'
Wrong Spelling:  Fla-b-ergast  Correct Spelling:  Fla-bb-ergast 
Explore spell check of Flabbergast to spell without errors.