A capricious, unreliable person
Don't count on that flibbertigibbet for any help!
a flibbertigibbet is a very silly person who talks too much.
i was unfortunately stuck next to a flibbertigibbet on the plane.
Pronounced FLIB-ur-tig-a-bit.
Usually a fool or stupid person.
That bloke was a bloody flibbertigibbet.
Some bitch with red hair. Word first used in the comedy "Joe Vs The Volcano".
I slept with a flibbertigibbet last night.
like Lowtax but with whiter tetth
well now look at that chap with the white teeth