bluntness

noun
1
the fact of being very direct and of saying exactly what you think without trying to be polite
صراحت, رک بودن, رک‌گویی, بی‌پرده‌گویی
2
the fact of being blunt(= without a sharp edge or point)
کند بودن, عدم تیزی, نوک کند, تیزی کم
opposite sharpness