Definition of "niaiserie" [niaiserie]

• Foolishness or stupidity; a foolish or stupid act. (noun)

The Century Dictionary (Public Domain)

• "In Pauline this finesse was partially concealed by a languor and indecision of manner and an occasional assumption of 'niaiserie'; or almost infantine simplicity; but this only threw people the more off their guard, and made her finesse the more sure in its operation."
• "'niaiserie'; or almost infantine simplicity; but this only threw people the more off their guard, and made her finesse the more sure in its operation."
• "SIMPLICITÉ, _f. _, qualité de ce qui est simple; niaiserie."