Definition of nugacious in US English:

nugacious

adjective

rare
  • Trivial, trifling; of no significance or importance.

Origin

Mid 17th century; earliest use found in John Gaule (1603/4–1687), Church of England clergyman and author. From classical Latin nūgāci-, nūgāx trifling, frivolous + -ous.

Pronunciation

nugacious

/njuːˈɡeɪʃəs/