from Wiktionary, Creative Commons Attribution/Share-Alike License.
superlativeform of flouncy: most flouncy.
Sorry, no etymologies found.
Alan Cumming did possibly the flounciest political endorsement ever on the SNP's YouTube channel, at the very least securing the Edinburgh Festival Fringe vote.
The effect is prose that's more rarefied, and more tortured, than the flounciest literary toodling.