noun
( -es )
: the quality or state of being treacherous
his treacherousness was … concealed under an appearance of honest and awkward dullness — John Fiske
noun
( -es )
: the quality or state of being treacherous
his treacherousness was … concealed under an appearance of honest and awkward dullness — John Fiske
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012