Home Misspellings How to spell flabergast? Flabergast or flabbergast? Which one is correct? by hersey August 12, 2018 Reading Time: 0min, 7sc + - 0 Flabergast or flabbergast Which one is correct? You can find the answer below. Incorrect Flabergast Correct Flabbergast You can find more information about Flabbergast word here. Rate this post Correct spelling of FlabergastHow do you spell Flabergast