1 definition by Marioni Stonioni

To settle a matter, to render it certain and free of doubt.
Person A: I ascertain that yo' momma so fat, she said the ABCs and caused the Great Vowel Shift.

Person B: Wow, certainly and without a doubt that my momma is very fat. Quite the bold Ascertainment.
by Marioni Stonioni December 3, 2018