frivolousnesses

noun

1. (form-of, plural)plural of frivolousness

   “1901, "The Complete Works of William Shakespeare", William Shakespeare, p. 186. … and thus the play appropriately ends when on either side the levities and frivolousnesses that had drawn out to ten years' length the desultory and …”

   “… parenthesis saying that in view of his great services they must overlook frivolousnesses and weaknesses which solid reflections would in time overcome.”