Definition of nugacity in English:

nugacity

noun

rare
  • 1[mass noun] Triviality or frivolity.

    1. 1.1[count noun] A trivial or frivolous thing or idea.

Origin

Late 16th century: from late Latin nugacitas, from Latin nugax, nugac- trifling, frivolous.

Pronunciation:

nugacity

/njuːˈɡasɪti/