English

Verb

flappergast ‎(third-person singular simple present flappergasts, present participle flappergasting, simple past and past participle flappergasted)

1. Alternative form of flabbergast^[1]

References

1. ↑ Joseph Wright (Ed.), editor (1900) The English Dialect Dictionary, Being the Complete Vocabulary of All Dialect, H. Frowde, page 376