0 an idea that shows a lot of imagination but is not practical:
Linguistic fact or lexicographer's flight of fancy, the etymology is ingenious enough at least to merit consideration.
That was not a flight of fancy: it was the fact.
This is not a flight of fancy on my part.
I do not think that is a flight of fancy.
I think that that is a flight of fancy.
I think it is a flight of fancy to suggest that there are many millionaires owning these down-at-heel houses.
Then he will realise that that flight of fancy was not worthy of even the rest of his argument.
I doubt whether we need spend much time on that weird flight of fancy.