Adjective
The word is derived from weighty
[P]ride has no intrinsic substance, being no more than the name given to the soul devouring itself. When that loathsome perversion of love has borne its fruit, it has another, more meaningful and weightier name. We call it hatred. Georges Bernanos
It is many years since I have wielded a weapon larger than a pen, borne anything weightier than a difficult problem in philosophy. Michael Moorcock
I have always looked after the little things of my business; weightier matters will take care of themselves. Collis Potter Huntington
Diplomacy... mops up war's spillages; legitimizes its outcomes; gives the strong state the means to impose its will on a weaker one, while saving its fleets and battalions for weightier opponents. David Mitchell (author)
There is yet a further and a weightier reason for the permanency of the Judicial offices, which is deducible from the nature of the qualifications they require. Alexander Hamilton
Duty is weightier than a mountain, while death is lighter than a feather. Japanese Proverb