Having weight; heavy; ponderous; as, a weighty body.
source: Webster 1913
adjective satellite
powerfully persuasive
A cogent argument. A telling presentation. A weighty argument.
source: WordNet 3.0
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.
source: WordNet 3.0
weighing heavily on the spirit; causing anxiety or worry
