flabuginous: something which is deceptive or fraudulent

The inkhorn terms can be fun sometimes. First off, maybe who wrote the definition replaced of things with something. It doesn't look like any Latin-derived word. flabellum is a 'small fan', flabello 'to fan'. The Greeks borrowed flabellum from the Romans and Hellenized it to φλαβίλλιον (phlabillion).

This is the problem with most of these rare words lists, they give no examples and merely copy from some previous, uncigted competitor. The word only shows up in Google for websites and in no books.

Good luck in your search.

Ceci n'est pas un seing.