Weighty Common

having relatively great weight; heavy

"a weighty load"

"a weighty package"

powerfully persuasive

"a cogent argument"

"a telling presentation"

"a weighty argument"

of great gravity or crucial import; requiring serious thought

"grave responsibilities"

"faced a grave decision in a time of crisis"

"a grievous fault"

"heavy matters of state"

"the weighty matters to be discussed at the peace conference"

weighing heavily on the spirit; causing anxiety or worry

"weighty problems"

excessively fat

"a weighty man"

Heavy (“having a lot of weight”).