1. having great weight; heavy
2. having great importance or significance; serious
3. having influence or authority; powerful

Examples

• The weighty box required two people to lift it.
• She carried a weighty burden of responsibility.
• The committee faced several weighty decisions.
• His weighty words influenced the entire debate.
• The professor’s weighty reputation attracted many students.
• They discussed weighty matters of national security.
• The weighty tome contained centuries of wisdom.