heftiness
nounUK /ˈheftinəs/
US /ˈheftinəs/
The quality of being big and heavy.
The heftiness of the box made it hard to lift.
OTHER MEANINGS
2. The quality of being strong and forceful.
The heftiness of his argument convinced everyone.
3. Great size or thickness.
She admired the heftiness of the old dictionary.
4. The state of being substantial or significant.
The heftiness of the report surprised the committee.